[Python-checkins] cpython (merge default -> default): Merge 3.4.0a4 release head back into trunk.

larry.hastings python-checkins at python.org
Tue Oct 22 19:49:54 CEST 2013


http://hg.python.org/cpython/rev/0917f6c62c62
changeset:   86576:0917f6c62c62
parent:      86575:c9574b714e2c
parent:      86571:64d94b21e731
user:        Larry Hastings <larry at hastings.org>
date:        Tue Oct 22 10:49:20 2013 -0700
summary:
  Merge 3.4.0a4 release head back into trunk.

files:
  Doc/library/aifc.rst                          |     4 +-
  Doc/library/collections.rst                   |    13 -
  Doc/library/ctypes.rst                        |     4 +-
  Doc/library/faulthandler.rst                  |     3 +-
  Doc/library/ipaddress.rst                     |     7 +-
  Doc/library/resource.rst                      |    67 +
  Doc/library/statistics.rst                    |   340 +-
  Doc/library/string.rst                        |    12 +-
  Doc/library/zipfile.rst                       |    10 +-
  Doc/whatsnew/3.4.rst                          |    22 +-
  Lib/asyncio/test_utils.py                     |     1 +
  Lib/asyncio/unix_events.py                    |    79 +-
  Lib/ftplib.py                                 |    15 +-
  Lib/hashlib.py                                |    41 +-
  Lib/importlib/_bootstrap.py                   |     3 +-
  Lib/inspect.py                                |    55 +-
  Lib/ipaddress.py                              |    76 +-
  Lib/json/__init__.py                          |     5 +
  Lib/platform.py                               |    19 +-
  Lib/pydoc.py                                  |     7 +-
  Lib/telnetlib.py                              |   273 +-
  Lib/test/test_asyncio/test_base_events.py     |     6 +
  Lib/test/test_asyncio/test_events.py          |    38 +-
  Lib/test/test_asyncio/test_proactor_events.py |     4 +
  Lib/test/test_asyncio/test_selector_events.py |     4 +
  Lib/test/test_asyncio/test_selectors.py       |     4 +
  Lib/test/test_asyncio/test_transports.py      |     4 +
  Lib/test/test_asyncio/test_unix_events.py     |    13 +-
  Lib/test/test_asyncio/test_windows_events.py  |     4 +
  Lib/test/test_asyncio/test_windows_utils.py   |     4 +
  Lib/test/test_audioop.py                      |    29 +-
  Lib/test/test_descr.py                        |     4 +-
  Lib/test/test_enum.py                         |   117 +-
  Lib/test/test_faulthandler.py                 |    18 +-
  Lib/test/test_ftplib.py                       |    22 +-
  Lib/test/test_funcattrs.py                    |     5 +-
  Lib/test/test_hashlib.py                      |    35 +-
  Lib/test/test_inspect.py                      |    20 +-
  Lib/test/test_ipaddress.py                    |     9 +
  Lib/test/test_json/test_decode.py             |    23 +-
  Lib/test/test_platform.py                     |    13 +
  Lib/test/test_pydoc.py                        |   192 +
  Lib/test/test_re.py                           |    22 +
  Lib/test/test_resource.py                     |    25 +
  Lib/test/test_telnetlib.py                    |   101 +-
  Lib/test/test_zipfile.py                      |   208 +-
  Lib/zipfile.py                                |   170 +-
  Misc/ACKS                                     |     1 +
  Misc/NEWS                                     |    39 +-
  Modules/_hashopenssl.c                        |    14 +-
  Modules/_sha3/sha3module.c                    |    10 +-
  Modules/_sre.c                                |    18 +-
  Modules/md5module.c                           |    11 +-
  Modules/resource.c                            |   134 +-
  Modules/sha1module.c                          |    11 +-
  Modules/sha256module.c                        |    14 +-
  Modules/sha512module.c                        |    13 +-
  Modules/zlib/ChangeLog                        |   266 ++-
  Modules/zlib/FAQ                              |    12 +-
  Modules/zlib/INDEX                            |    13 +-
  Modules/zlib/Makefile.in                      |   111 +-
  Modules/zlib/README                           |    24 +-
  Modules/zlib/adler32.c                        |    70 +-
  Modules/zlib/algorithm.txt                    |     4 +-
  Modules/zlib/compress.c                       |     2 +-
  Modules/zlib/configure                        |   571 +++-
  Modules/zlib/crc32.c                          |    83 +-
  Modules/zlib/crc32.h                          |     2 +-
  Modules/zlib/deflate.c                        |   265 +-
  Modules/zlib/deflate.h                        |    12 +-
  Modules/zlib/example.c                        |    90 +-
  Modules/zlib/gzguts.h                         |   103 +-
  Modules/zlib/gzio.c                           |  1026 ----------
  Modules/zlib/gzlib.c                          |   205 +-
  Modules/zlib/gzread.c                         |   431 +--
  Modules/zlib/gzwrite.c                        |   334 +-
  Modules/zlib/infback.c                        |    16 +-
  Modules/zlib/inffast.c                        |     6 +-
  Modules/zlib/inffixed.h                       |     6 +-
  Modules/zlib/inflate.c                        |   156 +-
  Modules/zlib/inftrees.c                       |    54 +-
  Modules/zlib/inftrees.h                       |     2 +-
  Modules/zlib/make_vms.com                     |   405 ++-
  Modules/zlib/minigzip.c                       |   213 ++-
  Modules/zlib/trees.c                          |    54 +-
  Modules/zlib/uncompr.c                        |     2 +-
  Modules/zlib/zconf.h                          |   201 +-
  Modules/zlib/zconf.h.cmakein                  |   201 +-
  Modules/zlib/zconf.h.in                       |   201 +-
  Modules/zlib/zconf.in.h                       |   332 ---
  Modules/zlib/zlib.3                           |    18 +-
  Modules/zlib/zlib.h                           |   343 ++-
  Modules/zlib/zlib.map                         |    15 +
  Modules/zlib/zutil.c                          |    26 +-
  Modules/zlib/zutil.h                          |   103 +-
  PC/VS9.0/pythoncore.vcproj                    |    68 -
  Python/compile.c                              |   155 +-
  Python/importlib.h                            |   270 +-
  Python/pythonrun.c                            |     4 +
  Python/traceback.c                            |    16 +-
  configure                                     |    29 +
  configure.ac                                  |    10 +
  pyconfig.h.in                                 |     3 +
  103 files changed, 4907 insertions(+), 4041 deletions(-)


diff --git a/Doc/library/aifc.rst b/Doc/library/aifc.rst
--- a/Doc/library/aifc.rst
+++ b/Doc/library/aifc.rst
@@ -30,8 +30,8 @@
 sampled.  The number of channels indicate if the audio is mono, stereo, or
 quadro.  Each frame consists of one sample per channel.  The sample size is the
 size in bytes of each sample.  Thus a frame consists of
-*nchannels*\*\ *samplesize* bytes, and a second's worth of audio consists of
-*nchannels*\*\ *samplesize*\*\ *framerate* bytes.
+``nchannels * samplesize`` bytes, and a second's worth of audio consists of
+``nchannels * samplesize * framerate`` bytes.
 
 For example, CD quality audio has a sample size of two bytes (16 bits), uses two
 channels (stereo) and has a frame rate of 44,100 frames/second.  This gives a
diff --git a/Doc/library/collections.rst b/Doc/library/collections.rst
--- a/Doc/library/collections.rst
+++ b/Doc/library/collections.rst
@@ -374,10 +374,6 @@
 
 .. seealso::
 
-    * `Counter class <http://code.activestate.com/recipes/576611/>`_
-      adapted for Python 2.5 and an early `Bag recipe
-      <http://code.activestate.com/recipes/259174/>`_ for Python 2.4.
-
     * `Bag class <http://www.gnu.org/software/smalltalk/manual-base/html_node/Bag.html>`_
       in Smalltalk.
 
@@ -920,11 +916,6 @@
     >>> class Status:
         open, pending, closed = range(3)
 
-.. seealso::
-
-    * `Named tuple recipe <http://code.activestate.com/recipes/500261/>`_
-      adapted for Python 2.4.
-
     * `Recipe for named tuple abstract base class with a metaclass mix-in
       <http://code.activestate.com/recipes/577629-namedtupleabc-abstract-base-class-mix-in-for-named/>`_
       by Jan Kaliszewski.  Besides providing an :term:`abstract base class` for
@@ -987,10 +978,6 @@
 keyword arguments, but their order is lost because Python's function call
 semantics pass-in keyword arguments using a regular unordered dictionary.
 
-.. seealso::
-
-    `Equivalent OrderedDict recipe <http://code.activestate.com/recipes/576693/>`_
-    that runs on Python 2.4 or later.
 
 :class:`OrderedDict` Examples and Recipes
 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
diff --git a/Doc/library/ctypes.rst b/Doc/library/ctypes.rst
--- a/Doc/library/ctypes.rst
+++ b/Doc/library/ctypes.rst
@@ -1909,8 +1909,8 @@
 
 .. function:: sizeof(obj_or_type)
 
-   Returns the size in bytes of a ctypes type or instance memory buffer. Does the
-   same as the C ``sizeof()`` function.
+   Returns the size in bytes of a ctypes type or instance memory buffer.
+   Does the same as the C ``sizeof`` operator.
 
 
 .. function:: string_at(address, size=-1)
diff --git a/Doc/library/faulthandler.rst b/Doc/library/faulthandler.rst
--- a/Doc/library/faulthandler.rst
+++ b/Doc/library/faulthandler.rst
@@ -27,6 +27,7 @@
 * Only the filename, the function name and the line number are
   displayed. (no source code)
 * It is limited to 100 frames and 100 threads.
+* The order is reversed: the most recent call is shown first.
 
 By default, the Python traceback is written to :data:`sys.stderr`. To see
 tracebacks, applications must be run in the terminal. A log file can
@@ -129,7 +130,7 @@
     >>> ctypes.string_at(0)
     Fatal Python error: Segmentation fault
 
-    Current thread 0x00007fb899f39700:
+    Current thread 0x00007fb899f39700 (most recent call first):
       File "/home/python/cpython/Lib/ctypes/__init__.py", line 486 in string_at
       File "<stdin>", line 1 in <module>
     Segmentation fault
diff --git a/Doc/library/ipaddress.rst b/Doc/library/ipaddress.rst
--- a/Doc/library/ipaddress.rst
+++ b/Doc/library/ipaddress.rst
@@ -158,10 +158,13 @@
       ``True`` if the address is reserved for multicast use.  See
       :RFC:`3171` (for IPv4) or :RFC:`2373` (for IPv6).
 
-   .. attribute:: is_private
+   .. attribute:: is_global
 
       ``True`` if the address is allocated for private networks.  See
-      :RFC:`1918` (for IPv4) or :RFC:`4193` (for IPv6).
+      iana-ipv4-special-registry (for IPv4) or iana-ipv6-special-registry
+      (for IPv6).
+
+   .. versionadded:: 3.4
 
    .. attribute:: is_unspecified
 
diff --git a/Doc/library/resource.rst b/Doc/library/resource.rst
--- a/Doc/library/resource.rst
+++ b/Doc/library/resource.rst
@@ -74,6 +74,27 @@
    ``setrlimit`` may also raise :exc:`error` if the underlying system call
    fails.
 
+.. function:: prlimit(pid, resource[, limits])
+
+   Combines :func:`setrlimit` and :func:`getrlimit` in one function and
+   supports to get and set the resources limits of an arbitrary process. If
+   *pid* is 0, then the call applies to the current process. *resource* and
+   *limits* have the same meaning as in :func:`setrlimit`, except that
+   *limits* is optional.
+
+   When *limits* is not given the function returns the *resource* limit of the
+   process *pid*. When *limits* is given the *resource* limit of the process is
+   set and the former resource limit is returned.
+
+   Raises :exc:`ProcessLookupError` when *pid* can't be found and
+   :exc:`PermissionError` when the user doesn't have ``CAP_SYS_RESOURCE`` for
+   the process.
+
+   Availability: Linux (glibc 2.13+)
+
+   .. versionadded:: 3.4
+
+
 These symbols define resources whose consumption can be controlled using the
 :func:`setrlimit` and :func:`getrlimit` functions described below. The values of
 these symbols are exactly the constants used by C programs.
@@ -151,6 +172,52 @@
    The maximum area (in bytes) of address space which may be taken by the process.
 
 
+.. data:: RLIMIT_MSGQUEUE
+
+   The number of bytes that can be allocated for POSIX message queues.
+
+   Availability: Linux 2.6.8 or later.
+
+   .. versionadded:: 3.4
+
+
+.. data:: RLIMIT_NICE
+
+   The ceiling for the process's nice level (calculated as 20 - rlim_cur).
+
+   Availability: Linux 2.6.12 or later.
+
+   .. versionadded:: 3.4
+
+
+.. data:: RLIMIT_RTPRIO
+
+   The ceiling of the real-time priority.
+
+   Availability: Linux 2.6.12 or later.
+
+   .. versionadded:: 3.4
+
+
+.. data:: RLIMIT_RTTIME
+
+   The time limit (in microseconds) on CPU time that a process can spend
+   under real-time scheduling without making a blocking syscall.
+
+   Availability: Linux 2.6.25 or later.
+
+   .. versionadded:: 3.4
+
+
+.. data:: RLIMIT_SIGPENDING
+
+   The number of signals which the process may queue.
+
+   Availability: Linux 2.6.8 or later.
+
+   .. versionadded:: 3.4
+
+
 Resource Usage
 --------------
 
diff --git a/Doc/library/statistics.rst b/Doc/library/statistics.rst
--- a/Doc/library/statistics.rst
+++ b/Doc/library/statistics.rst
@@ -35,21 +35,34 @@
 :func:`mode`             Mode (most common value) of discrete data.
 =======================  =============================================
 
-:func:`mean`
-~~~~~~~~~~~~
+Measures of spread
+------------------
 
-The :func:`mean` function calculates the arithmetic mean, commonly known
-as the average, of its iterable argument:
+These functions calculate a measure of how much the population or sample
+tends to deviate from the typical or average values.
+
+=======================  =============================================
+:func:`pstdev`           Population standard deviation of data.
+:func:`pvariance`        Population variance of data.
+:func:`stdev`            Sample standard deviation of data.
+:func:`variance`         Sample variance of data.
+=======================  =============================================
+
+
+Function details
+----------------
 
 .. function:: mean(data)
 
-   Return the sample arithmetic mean of *data*, a sequence or iterator
-   of real-valued numbers.
+   Return the sample arithmetic mean of *data*, a sequence or iterator of
+   real-valued numbers.
 
-   The arithmetic mean is the sum of the data divided by the number of
-   data points. It is commonly called "the average", although it is only
-   one of many different mathematical averages. It is a measure of the
-   central location of the data.
+   The arithmetic mean is the sum of the data divided by the number of data
+   points.  It is commonly called "the average", although it is only one of many
+   different mathematical averages.  It is a measure of the central location of
+   the data.
+
+   If *data* is empty, :exc:`StatisticsError` will be raised.
 
    Some examples of use:
 
@@ -70,75 +83,56 @@
 
    .. note::
 
-      The mean is strongly effected by outliers and is not a robust
-      estimator for central location: the mean is not necessarily a
-      typical example of the data points. For more robust, although less
-      efficient, measures of central location, see :func:`median` and
-      :func:`mode`. (In this case, "efficient" refers to statistical
-      efficiency rather than computational efficiency.)
+      The mean is strongly affected by outliers and is not a robust estimator
+      for central location: the mean is not necessarily a typical example of the
+      data points.  For more robust, although less efficient, measures of
+      central location, see :func:`median` and :func:`mode`.  (In this case,
+      "efficient" refers to statistical efficiency rather than computational
+      efficiency.)
 
-      The sample mean gives an unbiased estimate of the true population
-      mean, which means that, taken on average over all the possible
-      samples, ``mean(sample)`` converges on the true mean of the entire
-      population. If *data* represents the entire population rather than
-      a sample, then ``mean(data)`` is equivalent to calculating the true
-      population mean μ.
+      The sample mean gives an unbiased estimate of the true population mean,
+      which means that, taken on average over all the possible samples,
+      ``mean(sample)`` converges on the true mean of the entire population.  If
+      *data* represents the entire population rather than a sample, then
+      ``mean(data)`` is equivalent to calculating the true population mean μ.
 
-   If ``data`` is empty, :exc:`StatisticsError` will be raised.
-
-:func:`median`
-~~~~~~~~~~~~~~
-
-The :func:`median` function calculates the median, or middle, data point,
-using the common "mean of middle two" method.
-
-   .. seealso::
-
-      :func:`median_low`
-
-      :func:`median_high`
-
-      :func:`median_grouped`
 
 .. function:: median(data)
 
-   Return the median (middle value) of numeric data.
+   Return the median (middle value) of numeric data, using the common "mean of
+   middle two" method.  If *data* is empty, :exc:`StatisticsError` is raised.
 
-   The median is a robust measure of central location, and is less affected
-   by the presence of outliers in your data. When the number of data points
-   is odd, the middle data point is returned:
+   The median is a robust measure of central location, and is less affected by
+   the presence of outliers in your data.  When the number of data points is
+   odd, the middle data point is returned:
 
    .. doctest::
 
       >>> median([1, 3, 5])
       3
 
-   When the number of data points is even, the median is interpolated by
-   taking the average of the two middle values:
+   When the number of data points is even, the median is interpolated by taking
+   the average of the two middle values:
 
    .. doctest::
 
       >>> median([1, 3, 5, 7])
       4.0
 
-   This is suited for when your data is discrete, and you don't mind that
-   the median may not be an actual data point.
+   This is suited for when your data is discrete, and you don't mind that the
+   median may not be an actual data point.
 
-   If data is empty, :exc:`StatisticsError` is raised.
+   .. seealso:: :func:`median_low`, :func:`median_high`, :func:`median_grouped`
 
-:func:`median_low`
-~~~~~~~~~~~~~~~~~~
-
-The :func:`median_low` function calculates the low median without
-interpolation.
 
 .. function:: median_low(data)
 
-   Return the low median of numeric data.
+   Return the low median of numeric data.  If *data* is empty,
+   :exc:`StatisticsError` is raised.
 
-   The low median is always a member of the data set. When the number
-   of data points is odd, the middle value is returned. When it is
-   even, the smaller of the two middle values is returned.
+   The low median is always a member of the data set.  When the number of data
+   points is odd, the middle value is returned.  When it is even, the smaller of
+   the two middle values is returned.
 
    .. doctest::
 
@@ -147,24 +141,18 @@
       >>> median_low([1, 3, 5, 7])
       3
 
-   Use the low median when your data are discrete and you prefer the median
-   to be an actual data point rather than interpolated.
+   Use the low median when your data are discrete and you prefer the median to
+   be an actual data point rather than interpolated.
 
-   If data is empty, :exc:`StatisticsError` is raised.
-
-:func:`median_high`
-~~~~~~~~~~~~~~~~~~~
-
-The :func:`median_high` function calculates the high median without
-interpolation.
 
 .. function:: median_high(data)
 
-   Return the high median of data.
+   Return the high median of data.  If *data* is empty, :exc:`StatisticsError`
+   is raised.
 
-   The high median is always a member of the data set. When the number of
-   data points is odd, the middle value is returned. When it is even, the
-   larger of the two middle values is returned.
+   The high median is always a member of the data set.  When the number of data
+   points is odd, the middle value is returned.  When it is even, the larger of
+   the two middle values is returned.
 
    .. doctest::
 
@@ -173,41 +161,34 @@
       >>> median_high([1, 3, 5, 7])
       5
 
-   Use the high median when your data are discrete and you prefer the median
-   to be an actual data point rather than interpolated.
+   Use the high median when your data are discrete and you prefer the median to
+   be an actual data point rather than interpolated.
 
-   If data is empty, :exc:`StatisticsError` is raised.
 
-:func:`median_grouped`
-~~~~~~~~~~~~~~~~~~~~~~
+.. function:: median_grouped(data, interval=1)
 
-The :func:`median_grouped` function calculates the median of grouped data
-as the 50th percentile, using interpolation.
-
-.. function:: median_grouped(data [, interval])
-
-   Return the median of grouped continuous data, calculated as the
-   50th percentile.
+   Return the median of grouped continuous data, calculated as the 50th
+   percentile, using interpolation.  If *data* is empty, :exc:`StatisticsError`
+   is raised.
 
    .. doctest::
 
       >>> median_grouped([52, 52, 53, 54])
       52.5
 
-   In the following example, the data are rounded, so that each value
-   represents the midpoint of data classes, e.g. 1 is the midpoint of the
-   class 0.5-1.5, 2 is the midpoint of 1.5-2.5, 3 is the midpoint of
-   2.5-3.5, etc. With the data given, the middle value falls somewhere in
-   the class 3.5-4.5, and interpolation is used to estimate it:
+   In the following example, the data are rounded, so that each value represents
+   the midpoint of data classes, e.g. 1 is the midpoint of the class 0.5-1.5, 2
+   is the midpoint of 1.5-2.5, 3 is the midpoint of 2.5-3.5, etc.  With the data
+   given, the middle value falls somewhere in the class 3.5-4.5, and
+   interpolation is used to estimate it:
 
    .. doctest::
 
       >>> median_grouped([1, 2, 2, 3, 4, 4, 4, 4, 4, 5])
       3.7
 
-   Optional argument ``interval`` represents the class interval, and
-   defaults to 1. Changing the class interval naturally will change the
-   interpolation:
+   Optional argument *interval* represents the class interval, and defaults
+   to 1.  Changing the class interval naturally will change the interpolation:
 
    .. doctest::
 
@@ -217,36 +198,34 @@
       3.5
 
    This function does not check whether the data points are at least
-   ``interval`` apart.
+   *interval* apart.
 
    .. impl-detail::
 
-      Under some circumstances, :func:`median_grouped` may coerce data
-      points to floats. This behaviour is likely to change in the future.
+      Under some circumstances, :func:`median_grouped` may coerce data points to
+      floats.  This behaviour is likely to change in the future.
 
    .. seealso::
 
-      * "Statistics for the Behavioral Sciences", Frederick J Gravetter
-         and Larry B Wallnau (8th Edition).
+      * "Statistics for the Behavioral Sciences", Frederick J Gravetter and
+        Larry B Wallnau (8th Edition).
 
       * Calculating the `median <http://www.ualberta.ca/~opscan/median.html>`_.
 
-      * The `SSMEDIAN <https://projects.gnome.org/gnumeric/doc/gnumeric-function-SSMEDIAN.shtml>`_
-         function in the Gnome Gnumeric spreadsheet, including
-         `this discussion <https://mail.gnome.org/archives/gnumeric-list/2011-April/msg00018.html>`_.
+      * The `SSMEDIAN
+        <https://projects.gnome.org/gnumeric/doc/gnumeric-function-SSMEDIAN.shtml>`_
+        function in the Gnome Gnumeric spreadsheet, including `this discussion
+        <https://mail.gnome.org/archives/gnumeric-list/2011-April/msg00018.html>`_.
 
-   If data is empty, :exc:`StatisticsError` is raised.
-
-:func:`mode`
-~~~~~~~~~~~~
-
-The :func:`mode` function calculates the mode, or most common element, of
-discrete or nominal data. The mode (when it exists) is the most typical
-value, and is a robust measure of central location.
 
 .. function:: mode(data)
 
-   Return the most common data point from discrete or nominal data.
+   Return the most common data point from discrete or nominal *data*.  The mode
+   (when it exists) is the most typical value, and is a robust measure of
+   central location.
+
+   If *data* is empty, or if there is not exactly one most common value,
+   :exc:`StatisticsError` is raised.
 
    ``mode`` assumes discrete data, and returns a single value. This is the
    standard treatment of the mode as commonly taught in schools:
@@ -264,60 +243,35 @@
       >>> mode(["red", "blue", "blue", "red", "green", "red", "red"])
       'red'
 
-   If data is empty, or if there is not exactly one most common value,
-   :exc:`StatisticsError` is raised.
 
-Measures of spread
-------------------
+.. function:: pstdev(data, mu=None)
 
-These functions calculate a measure of how much the population or sample
-tends to deviate from the typical or average values.
-
-=======================  =============================================
-:func:`pstdev`           Population standard deviation of data.
-:func:`pvariance`        Population variance of data.
-:func:`stdev`            Sample standard deviation of data.
-:func:`variance`         Sample variance of data.
-=======================  =============================================
-
-:func:`pstdev`
-~~~~~~~~~~~~~~
-
-The :func:`pstdev` function calculates the standard deviation of a
-population. The standard deviation is equivalent to the square root of
-the variance.
-
-.. function:: pstdev(data [, mu])
-
-   Return the square root of the population variance. See :func:`pvariance`
-   for arguments and other details.
+   Return the population standard deviation (the square root of the population
+   variance).  See :func:`pvariance` for arguments and other details.
 
    .. doctest::
 
       >>> pstdev([1.5, 2.5, 2.5, 2.75, 3.25, 4.75])
       0.986893273527251
 
-:func:`pvariance`
-~~~~~~~~~~~~~~~~~
 
-The :func:`pvariance` function calculates the variance of a population.
-Variance, or second moment about the mean, is a measure of the variability
-(spread or dispersion) of data. A large variance indicates that the data is
-spread out; a small variance indicates it is clustered closely around the
-mean.
+.. function:: pvariance(data, mu=None)
 
-.. function:: pvariance(data [, mu])
+   Return the population variance of *data*, a non-empty iterable of real-valued
+   numbers.  Variance, or second moment about the mean, is a measure of the
+   variability (spread or dispersion) of data.  A large variance indicates that
+   the data is spread out; a small variance indicates it is clustered closely
+   around the mean.
 
-   Return the population variance of *data*, a non-empty iterable of
-   real-valued numbers.
-
-   If the optional second argument *mu* is given, it should be the mean
-   of *data*. If it is missing or None (the default), the mean is
+   If the optional second argument *mu* is given, it should be the mean of
+   *data*.  If it is missing or ``None`` (the default), the mean is
    automatically calculated.
 
-   Use this function to calculate the variance from the entire population.
-   To estimate the variance from a sample, the :func:`variance` function is
-   usually a better choice.
+   Use this function to calculate the variance from the entire population.  To
+   estimate the variance from a sample, the :func:`variance` function is usually
+   a better choice.
+
+   Raises :exc:`StatisticsError` if *data* is empty.
 
    Examples:
 
@@ -327,8 +281,8 @@
       >>> pvariance(data)
       1.25
 
-   If you have already calculated the mean of your data, you can pass
-   it as the optional second argument *mu* to avoid recalculation:
+   If you have already calculated the mean of your data, you can pass it as the
+   optional second argument *mu* to avoid recalculation:
 
    .. doctest::
 
@@ -336,9 +290,9 @@
       >>> pvariance(data, mu)
       1.25
 
-   This function does not attempt to verify that you have passed the actual
-   mean as *mu*. Using arbitrary values for *mu* may lead to invalid or
-   impossible results.
+   This function does not attempt to verify that you have passed the actual mean
+   as *mu*.  Using arbitrary values for *mu* may lead to invalid or impossible
+   results.
 
    Decimals and Fractions are supported:
 
@@ -354,53 +308,44 @@
 
    .. note::
 
-      When called with the entire population, this gives the population
-      variance σ². When called on a sample instead, this is the biased
-      sample variance s², also known as variance with N degrees of freedom.
+      When called with the entire population, this gives the population variance
+      σ².  When called on a sample instead, this is the biased sample variance
+      s², also known as variance with N degrees of freedom.
 
-      If you somehow know the true population mean μ, you may use this
-      function to calculate the variance of a sample, giving the known
-      population mean as the second argument. Provided the data points are
-      representative (e.g. independent and identically distributed), the
-      result will be an unbiased estimate of the population variance.
+      If you somehow know the true population mean μ, you may use this function
+      to calculate the variance of a sample, giving the known population mean as
+      the second argument.  Provided the data points are representative
+      (e.g. independent and identically distributed), the result will be an
+      unbiased estimate of the population variance.
 
-   Raises :exc:`StatisticsError` if *data* is empty.
 
-:func:`stdev`
-~~~~~~~~~~~~~~
+.. function:: stdev(data, xbar=None)
 
-The :func:`stdev` function calculates the standard deviation of a sample.
-The standard deviation is equivalent to the square root of the variance.
-
-.. function:: stdev(data [, xbar])
-
-   Return the square root of the sample variance. See :func:`variance` for
-   arguments and other details.
+   Return the sample standard deviation (the square root of the sample
+   variance).  See :func:`variance` for arguments and other details.
 
    .. doctest::
 
       >>> stdev([1.5, 2.5, 2.5, 2.75, 3.25, 4.75])
       1.0810874155219827
 
-:func:`variance`
-~~~~~~~~~~~~~~~~~
 
-The :func:`variance` function calculates the variance of a sample. Variance,
-or second moment about the mean, is a measure of the variability (spread or
-dispersion) of data. A large variance indicates that the data is spread out;
-a small variance indicates it is clustered closely around the mean.
+.. function:: variance(data, xbar=None)
 
-.. function:: variance(data [, xbar])
+   Return the sample variance of *data*, an iterable of at least two real-valued
+   numbers.  Variance, or second moment about the mean, is a measure of the
+   variability (spread or dispersion) of data.  A large variance indicates that
+   the data is spread out; a small variance indicates it is clustered closely
+   around the mean.
 
-   Return the sample variance of *data*, an iterable of at least two
-   real-valued numbers.
-
-   If the optional second argument *xbar* is given, it should be the mean
-   of *data*. If it is missing or None (the default), the mean is
+   If the optional second argument *xbar* is given, it should be the mean of
+   *data*.  If it is missing or ``None`` (the default), the mean is
    automatically calculated.
 
-   Use this function when your data is a sample from a population. To
-   calculate the variance from the entire population, see :func:`pvariance`.
+   Use this function when your data is a sample from a population. To calculate
+   the variance from the entire population, see :func:`pvariance`.
+
+   Raises :exc:`StatisticsError` if *data* has fewer than two values.
 
    Examples:
 
@@ -410,8 +355,8 @@
       >>> variance(data)
       1.3720238095238095
 
-   If you have already calculated the mean of your data, you can pass
-   it as the optional second argument *xbar* to avoid recalculation:
+   If you have already calculated the mean of your data, you can pass it as the
+   optional second argument *xbar* to avoid recalculation:
 
    .. doctest::
 
@@ -419,8 +364,8 @@
       >>> variance(data, m)
       1.3720238095238095
 
-   This function does not attempt to verify that you have passed the actual
-   mean as *xbar*. Using arbitrary values for *xbar* can lead to invalid or
+   This function does not attempt to verify that you have passed the actual mean
+   as *xbar*.  Using arbitrary values for *xbar* can lead to invalid or
    impossible results.
 
    Decimal and Fraction values are supported:
@@ -437,26 +382,23 @@
 
    .. note::
 
-      This is the sample variance s² with Bessel's correction, also known
-      as variance with N-1 degrees of freedom. Provided that the data
-      points are representative (e.g. independent and identically
-      distributed), the result should be an unbiased estimate of the true
-      population variance.
+      This is the sample variance s² with Bessel's correction, also known as
+      variance with N-1 degrees of freedom.  Provided that the data points are
+      representative (e.g. independent and identically distributed), the result
+      should be an unbiased estimate of the true population variance.
 
-      If you somehow know the actual population mean μ you should pass it
-      to the :func:`pvariance` function as the *mu* parameter to get
-      the variance of a sample.
-
-   Raises :exc:`StatisticsError` if *data* has fewer than two values.
+      If you somehow know the actual population mean μ you should pass it to the
+      :func:`pvariance` function as the *mu* parameter to get the variance of a
+      sample.
 
 Exceptions
 ----------
 
 A single exception is defined:
 
-:exc:`StatisticsError`
+.. exception:: StatisticsError
 
-Subclass of :exc:`ValueError` for statistics-related exceptions.
+   Subclass of :exc:`ValueError` for statistics-related exceptions.
 
 ..
    # This modelines must appear within the last ten lines of the file.
diff --git a/Doc/library/string.rst b/Doc/library/string.rst
--- a/Doc/library/string.rst
+++ b/Doc/library/string.rst
@@ -293,18 +293,18 @@
 
 .. productionlist:: sf
    format_spec: [[`fill`]`align`][`sign`][#][0][`width`][,][.`precision`][`type`]
-   fill: <a character other than '{' or '}'>
+   fill: <any character>
    align: "<" | ">" | "=" | "^"
    sign: "+" | "-" | " "
    width: `integer`
    precision: `integer`
    type: "b" | "c" | "d" | "e" | "E" | "f" | "F" | "g" | "G" | "n" | "o" | "s" | "x" | "X" | "%"
 
-The *fill* character can be any character other than '{' or '}'.  The presence
-of a fill character is signaled by the character following it, which must be
-one of the alignment options.  If the second character of *format_spec* is not
-a valid alignment option, then it is assumed that both the fill character and
-the alignment option are absent.
+If a valid *align* value is specified, it can be preceeded by a *fill*
+character that can be any character and defaults to a space if omitted.
+Note that it is not possible to use ``{`` and ``}`` as *fill* char while
+using the :meth:`str.format` method; this limitation however doesn't
+affect the :func:`format` function.
 
 The meaning of the various alignment options is as follows:
 
diff --git a/Doc/library/zipfile.rst b/Doc/library/zipfile.rst
--- a/Doc/library/zipfile.rst
+++ b/Doc/library/zipfile.rst
@@ -382,7 +382,7 @@
 
    Instances have one method in addition to those of :class:`ZipFile` objects:
 
-   .. method:: PyZipFile.writepy(pathname, basename='')
+   .. method:: PyZipFile.writepy(pathname, basename='', filterfunc=None)
 
       Search for files :file:`\*.py` and add the corresponding file to the
       archive.
@@ -404,7 +404,10 @@
       package directory, then all :file:`\*.py[co]` are added under the package
       name as a file path, and if any subdirectories are package directories,
       all of these are added recursively.  *basename* is intended for internal
-      use only.  The :meth:`writepy` method makes archives with file names like
+      use only.  When *filterfunc(pathname)* is given, it will be called for every
+      invocation. When it returns a False value, that path and its subpaths will
+      be ignored.
+      The :meth:`writepy` method makes archives with file names like
       this::
 
          string.pyc                   # Top level name
@@ -413,6 +416,9 @@
          test/bogus/__init__.pyc      # Subpackage directory
          test/bogus/myfile.pyc        # Submodule test.bogus.myfile
 
+      .. versionadded:: 3.4
+         The *filterfunc* parameter.
+
 
 .. _zipinfo-objects:
 
diff --git a/Doc/whatsnew/3.4.rst b/Doc/whatsnew/3.4.rst
--- a/Doc/whatsnew/3.4.rst
+++ b/Doc/whatsnew/3.4.rst
@@ -271,7 +271,7 @@
 statement. (Contributed by Raymond Hettinger in :issue:`15806` and
 Zero Piraeus in :issue:`19266`)
 
-The new :class:`contextlib.redirect_stdio` context manager makes it easier
+The new :func:`contextlib.redirect_stdout` context manager makes it easier
 for utility scripts to handle inflexible APIs that don't provide any
 options to retrieve their output as a string or direct it to somewhere
 other than :data:`sys.stdout`. In conjunction with :class:`io.StringIO`,
@@ -434,10 +434,16 @@
 pprint
 ------
 
-The :mod::`pprint` module now supports *compact* mode for formatting long
+The :mod:`pprint` module now supports *compact* mode for formatting long
 sequences (:issue:`19132`).
 
 
+resource
+--------
+
+New :func:`resource.prlimit` function and Linux specific constants.
+(Contributed by Christian Heimes in :issue:`16595` and :issue:`19324`.)
+
 smtplib
 -------
 
@@ -564,6 +570,16 @@
 
 (Contributed by Antoine Pitrou in :issue:`17741`.)
 
+
+zipfile.PyZipfile
+-----------------
+
+Add a filter function to ignore some packages (tests for instance),
+:meth:`~zipfile.PyZipFile.writepy`.
+
+(Contributed by Christian Tismer in :issue:`19274`.)
+
+
 Other improvements
 ==================
 
@@ -597,7 +613,7 @@
   LINEAR_PROBES to be any value.  Set LINEAR_PROBES=0 to turn-off
   linear probing entirely.
 
-  (Contributed by Raymond Hettinger in :issue"`18771`.)
+  (Contributed by Raymond Hettinger in :issue:`18771`.)
 
 * The interpreter starts about 30% faster. A couple of measures lead to the
   speedup. The interpreter loads fewer modules on startup, e.g. the :mod:`re`,
diff --git a/Lib/asyncio/test_utils.py b/Lib/asyncio/test_utils.py
--- a/Lib/asyncio/test_utils.py
+++ b/Lib/asyncio/test_utils.py
@@ -126,6 +126,7 @@
         yield httpd
     finally:
         httpd.shutdown()
+        httpd.server_close()
         server_thread.join()
 
 
diff --git a/Lib/asyncio/unix_events.py b/Lib/asyncio/unix_events.py
--- a/Lib/asyncio/unix_events.py
+++ b/Lib/asyncio/unix_events.py
@@ -3,7 +3,6 @@
 import collections
 import errno
 import fcntl
-import functools
 import os
 import signal
 import socket
@@ -167,23 +166,29 @@
 
     def _sig_chld(self):
         try:
-            try:
-                pid, status = os.waitpid(0, os.WNOHANG)
-            except ChildProcessError:
-                return
-            if pid == 0:
-                self.call_soon(self._sig_chld)
-                return
-            elif os.WIFSIGNALED(status):
-                returncode = -os.WTERMSIG(status)
-            elif os.WIFEXITED(status):
-                returncode = os.WEXITSTATUS(status)
-            else:
-                self.call_soon(self._sig_chld)
-                return
-            transp = self._subprocesses.get(pid)
-            if transp is not None:
-                transp._process_exited(returncode)
+            # Because of signal coalescing, we must keep calling waitpid() as
+            # long as we're able to reap a child.
+            while True:
+                try:
+                    pid, status = os.waitpid(-1, os.WNOHANG)
+                except ChildProcessError:
+                    break  # No more child processes exist.
+                if pid == 0:
+                    break  # All remaining child processes are still alive.
+                elif os.WIFSIGNALED(status):
+                    # A child process died because of a signal.
+                    returncode = -os.WTERMSIG(status)
+                elif os.WIFEXITED(status):
+                    # A child process exited (e.g. sys.exit()).
+                    returncode = os.WEXITSTATUS(status)
+                else:
+                    # A child exited, but we don't understand its status.
+                    # This shouldn't happen, but if it does, let's just
+                    # return that status; perhaps that helps debug it.
+                    returncode = status
+                transp = self._subprocesses.get(pid)
+                if transp is not None:
+                    transp._process_exited(returncode)
         except Exception:
             logger.exception('Unknown exception in SIGCHLD handler')
 
@@ -208,6 +213,9 @@
         self._loop = loop
         self._pipe = pipe
         self._fileno = pipe.fileno()
+        mode = os.fstat(self._fileno).st_mode
+        if not (stat.S_ISFIFO(mode) or stat.S_ISSOCK(mode)):
+            raise ValueError("Pipe transport is for pipes/sockets only.")
         _set_nonblocking(self._fileno)
         self._protocol = protocol
         self._closing = False
@@ -270,21 +278,29 @@
         self._loop = loop
         self._pipe = pipe
         self._fileno = pipe.fileno()
-        if not stat.S_ISFIFO(os.fstat(self._fileno).st_mode):
-            raise ValueError("Pipe transport is for pipes only.")
+        mode = os.fstat(self._fileno).st_mode
+        is_socket = stat.S_ISSOCK(mode)
+        is_pipe = stat.S_ISFIFO(mode)
+        if not (is_socket or is_pipe):
+            raise ValueError("Pipe transport is for pipes/sockets only.")
         _set_nonblocking(self._fileno)
         self._protocol = protocol
         self._buffer = []
         self._conn_lost = 0
         self._closing = False  # Set when close() or write_eof() called.
-        self._loop.add_reader(self._fileno, self._read_ready)
+
+        # On AIX, the reader trick only works for sockets.
+        # On other platforms it works for pipes and sockets.
+        # (Exception: OS X 10.4?  Issue #19294.)
+        if is_socket or not sys.platform.startswith("aix"):
+            self._loop.add_reader(self._fileno, self._read_ready)
 
         self._loop.call_soon(self._protocol.connection_made, self)
         if waiter is not None:
             self._loop.call_soon(waiter.set_result, None)
 
     def _read_ready(self):
-        # pipe was closed by peer
+        # Pipe was closed by peer.
         self._close()
 
     def write(self, data):
@@ -430,8 +446,15 @@
         self._loop = loop
 
         self._pipes = {}
+        stdin_w = None
         if stdin == subprocess.PIPE:
             self._pipes[STDIN] = None
+            # Use a socket pair for stdin, since not all platforms
+            # support selecting read events on the write end of a
+            # socket (which we use in order to detect closing of the
+            # other end).  Notably this is needed on AIX, and works
+            # just fine on other platforms.
+            stdin, stdin_w = self._loop._socketpair()
         if stdout == subprocess.PIPE:
             self._pipes[STDOUT] = None
         if stderr == subprocess.PIPE:
@@ -443,6 +466,9 @@
         self._proc = subprocess.Popen(
             args, shell=shell, stdin=stdin, stdout=stdout, stderr=stderr,
             universal_newlines=False, bufsize=bufsize, **kwargs)
+        if stdin_w is not None:
+            stdin.close()
+            self._proc.stdin = open(stdin_w.detach(), 'rb', buffering=bufsize)
         self._extra['subprocess'] = self._proc
 
     def close(self):
@@ -478,18 +504,15 @@
         loop = self._loop
         if proc.stdin is not None:
             transp, proto = yield from loop.connect_write_pipe(
-                functools.partial(
-                    _UnixWriteSubprocessPipeProto, self, STDIN),
+                lambda: _UnixWriteSubprocessPipeProto(self, STDIN),
                 proc.stdin)
         if proc.stdout is not None:
             transp, proto = yield from loop.connect_read_pipe(
-                functools.partial(
-                    _UnixReadSubprocessPipeProto, self, STDOUT),
+                lambda: _UnixReadSubprocessPipeProto(self, STDOUT),
                 proc.stdout)
         if proc.stderr is not None:
             transp, proto = yield from loop.connect_read_pipe(
-                functools.partial(
-                    _UnixReadSubprocessPipeProto, self, STDERR),
+                lambda: _UnixReadSubprocessPipeProto(self, STDERR),
                 proc.stderr)
         if not self._pipes:
             self._try_connected()
diff --git a/Lib/ftplib.py b/Lib/ftplib.py
--- a/Lib/ftplib.py
+++ b/Lib/ftplib.py
@@ -50,6 +50,8 @@
 
 # The standard FTP server control port
 FTP_PORT = 21
+# The sizehint parameter passed to readline() calls
+MAXLINE = 8192
 
 
 # Exception raised when an error or invalid response is received
@@ -97,6 +99,7 @@
     debugging = 0
     host = ''
     port = FTP_PORT
+    maxline = MAXLINE
     sock = None
     file = None
     welcome = None
@@ -197,7 +200,9 @@
     # Internal: return one line from the server, stripping CRLF.
     # Raise EOFError if the connection is closed
     def getline(self):
-        line = self.file.readline()
+        line = self.file.readline(self.maxline + 1)
+        if len(line) > self.maxline:
+            raise Error("got more than %d bytes" % self.maxline)
         if self.debugging > 1:
             print('*get*', self.sanitize(line))
         if not line:
@@ -463,7 +468,9 @@
         with self.transfercmd(cmd) as conn, \
                  conn.makefile('r', encoding=self.encoding) as fp:
             while 1:
-                line = fp.readline()
+                line = fp.readline(self.maxline + 1)
+                if len(line) > self.maxline:
+                    raise Error("got more than %d bytes" % self.maxline)
                 if self.debugging > 2:
                     print('*retr*', repr(line))
                 if not line:
@@ -522,7 +529,9 @@
         self.voidcmd('TYPE A')
         with self.transfercmd(cmd) as conn:
             while 1:
-                buf = fp.readline()
+                buf = fp.readline(self.maxline + 1)
+                if len(buf) > self.maxline:
+                    raise Error("got more than %d bytes" % self.maxline)
                 if not buf:
                     break
                 if buf[-2:] != B_CRLF:
diff --git a/Lib/hashlib.py b/Lib/hashlib.py
--- a/Lib/hashlib.py
+++ b/Lib/hashlib.py
@@ -64,43 +64,42 @@
                                 'algorithms_available', 'pbkdf2_hmac')
 
 
+__builtin_constructor_cache = {}
+
 def __get_builtin_constructor(name):
+    cache = __builtin_constructor_cache
+    constructor = cache.get(name)
+    if constructor is not None:
+        return constructor
     try:
         if name in ('SHA1', 'sha1'):
             import _sha1
-            return _sha1.sha1
+            cache['SHA1'] = cache['sha1'] = _sha1.sha1
         elif name in ('MD5', 'md5'):
             import _md5
-            return _md5.md5
+            cache['MD5'] = cache['md5'] = _md5.md5
         elif name in ('SHA256', 'sha256', 'SHA224', 'sha224'):
             import _sha256
-            bs = name[3:]
-            if bs == '256':
-                return _sha256.sha256
-            elif bs == '224':
-                return _sha256.sha224
+            cache['SHA224'] = cache['sha224'] = _sha256.sha224
+            cache['SHA256'] = cache['sha256'] = _sha256.sha256
         elif name in ('SHA512', 'sha512', 'SHA384', 'sha384'):
             import _sha512
-            bs = name[3:]
-            if bs == '512':
-                return _sha512.sha512
-            elif bs == '384':
-                return _sha512.sha384
+            cache['SHA384'] = cache['sha384'] = _sha512.sha384
+            cache['SHA512'] = cache['sha512'] = _sha512.sha512
         elif name in {'sha3_224', 'sha3_256', 'sha3_384', 'sha3_512',
                       'SHA3_224', 'SHA3_256', 'SHA3_384', 'SHA3_512'}:
             import _sha3
-            bs = name[5:]
-            if bs == '224':
-                return _sha3.sha3_224
-            elif bs == '256':
-                return _sha3.sha3_256
-            elif bs == '384':
-                return _sha3.sha3_384
-            elif bs == '512':
-                return _sha3.sha3_512
+            cache['SHA3_224'] = cache['sha3_224'] = _sha3.sha3_224
+            cache['SHA3_256'] = cache['sha3_256'] = _sha3.sha3_256
+            cache['SHA3_384'] = cache['sha3_384'] = _sha3.sha3_384
+            cache['SHA3_512'] = cache['sha3_512'] = _sha3.sha3_512
     except ImportError:
         pass  # no extension module, this hash is unsupported.
 
+    constructor = cache.get(name)
+    if constructor is not None:
+        return constructor
+
     raise ValueError('unsupported hash type ' + name)
 
 
diff --git a/Lib/importlib/_bootstrap.py b/Lib/importlib/_bootstrap.py
--- a/Lib/importlib/_bootstrap.py
+++ b/Lib/importlib/_bootstrap.py
@@ -370,12 +370,13 @@
 #     Python 3.4a1  3270 (various tweaks to the __class__ closure)
 #     Python 3.4a1  3280 (remove implicit class argument)
 #     Python 3.4a4  3290 (changes to __qualname__ computation)
+#     Python 3.4a4  3300 (more changes to __qualname__ computation)
 #
 # MAGIC must change whenever the bytecode emitted by the compiler may no
 # longer be understood by older implementations of the eval loop (usually
 # due to the addition of new opcodes).
 
-MAGIC_NUMBER = (3290).to_bytes(2, 'little') + b'\r\n'
+MAGIC_NUMBER = (3300).to_bytes(2, 'little') + b'\r\n'
 _RAW_MAGIC_NUMBER = int.from_bytes(MAGIC_NUMBER, 'little')  # For import.c
 
 _PYCACHE = '__pycache__'
diff --git a/Lib/inspect.py b/Lib/inspect.py
--- a/Lib/inspect.py
+++ b/Lib/inspect.py
@@ -269,9 +269,9 @@
     results = []
     processed = set()
     names = dir(object)
-    # add any virtual attributes to the list of names if object is a class
+    # :dd any DynamicClassAttributes to the list of names if object is a class;
     # this may result in duplicate entries if, for example, a virtual
-    # attribute with the same name as a member property exists
+    # attribute with the same name as a DynamicClassAttribute exists
     try:
         for base in object.__bases__:
             for k, v in base.__dict__.items():
@@ -329,79 +329,88 @@
 
     If one of the items in dir(cls) is stored in the metaclass it will now
     be discovered and not have None be listed as the class in which it was
-    defined.
+    defined.  Any items whose home class cannot be discovered are skipped.
     """
 
     mro = getmro(cls)
     metamro = getmro(type(cls)) # for attributes stored in the metaclass
     metamro = tuple([cls for cls in metamro if cls not in (type, object)])
-    possible_bases = (cls,) + mro + metamro
+    class_bases = (cls,) + mro
+    all_bases = class_bases + metamro
     names = dir(cls)
-    # add any virtual attributes to the list of names
+    # :dd any DynamicClassAttributes to the list of names;
     # this may result in duplicate entries if, for example, a virtual
-    # attribute with the same name as a member property exists
+    # attribute with the same name as a DynamicClassAttribute exists.
     for base in mro:
         for k, v in base.__dict__.items():
             if isinstance(v, types.DynamicClassAttribute):
                 names.append(k)
     result = []
     processed = set()
-    sentinel = object()
+
     for name in names:
         # Get the object associated with the name, and where it was defined.
         # Normal objects will be looked up with both getattr and directly in
         # its class' dict (in case getattr fails [bug #1785], and also to look
         # for a docstring).
-        # For VirtualAttributes on the second pass we only look in the
+        # For DynamicClassAttributes on the second pass we only look in the
         # class's dict.
         #
         # Getting an obj from the __dict__ sometimes reveals more than
         # using getattr.  Static and class methods are dramatic examples.
         homecls = None
-        get_obj = sentinel
-        dict_obj = sentinel
+        get_obj = None
+        dict_obj = None
         if name not in processed:
             try:
                 if name == '__dict__':
-                    raise Exception("__dict__ is special, we don't want the proxy")
+                    raise Exception("__dict__ is special, don't want the proxy")
                 get_obj = getattr(cls, name)
             except Exception as exc:
                 pass
             else:
                 homecls = getattr(get_obj, "__objclass__", homecls)
-                if homecls not in possible_bases:
+                if homecls not in class_bases:
                     # if the resulting object does not live somewhere in the
                     # mro, drop it and search the mro manually
                     homecls = None
                     last_cls = None
-                    last_obj = None
-                    for srch_cls in ((cls,) + mro):
+                    # first look in the classes
+                    for srch_cls in class_bases:
                         srch_obj = getattr(srch_cls, name, None)
-                        if srch_obj is get_obj:
+                        if srch_obj == get_obj:
                             last_cls = srch_cls
-                            last_obj = srch_obj
+                    # then check the metaclasses
+                    for srch_cls in metamro:
+                        try:
+                            srch_obj = srch_cls.__getattr__(cls, name)
+                        except AttributeError:
+                            continue
+                        if srch_obj == get_obj:
+                            last_cls = srch_cls
                     if last_cls is not None:
                         homecls = last_cls
-        for base in possible_bases:
+        for base in all_bases:
             if name in base.__dict__:
                 dict_obj = base.__dict__[name]
-                homecls = homecls or base
+                if homecls not in metamro:
+                    homecls = base
                 break
         if homecls is None:
             # unable to locate the attribute anywhere, most likely due to
             # buggy custom __dir__; discard and move on
             continue
+        obj = get_obj or dict_obj
         # Classify the object or its descriptor.
-        if get_obj is not sentinel:
-            obj = get_obj
-        else:
-            obj = dict_obj
         if isinstance(dict_obj, staticmethod):
             kind = "static method"
+            obj = dict_obj
         elif isinstance(dict_obj, classmethod):
             kind = "class method"
-        elif isinstance(obj, property):
+            obj = dict_obj
+        elif isinstance(dict_obj, property):
             kind = "property"
+            obj = dict_obj
         elif isfunction(obj) or ismethoddescriptor(obj):
             kind = "method"
         else:
diff --git a/Lib/ipaddress.py b/Lib/ipaddress.py
--- a/Lib/ipaddress.py
+++ b/Lib/ipaddress.py
@@ -975,13 +975,25 @@
         """Test if this address is allocated for private networks.
 
         Returns:
-            A boolean, True if the address is reserved per RFC 4193.
+            A boolean, True if the address is reserved per
+            iana-ipv4-special-registry or iana-ipv6-special-registry.
 
         """
         return (self.network_address.is_private and
                 self.broadcast_address.is_private)
 
     @property
+    def is_global(self):
+        """Test if this address is allocated for private networks.
+
+        Returns:
+            A boolean, True if the address is not reserved per
+            iana-ipv4-special-registry or iana-ipv6-special-registry.
+
+        """
+        return not self.is_private
+
+    @property
     def is_unspecified(self):
         """Test if the address is unspecified.
 
@@ -1225,15 +1237,37 @@
         """Test if this address is allocated for private networks.
 
         Returns:
-            A boolean, True if the address is reserved per RFC 1918.
+            A boolean, True if the address is reserved per
+            iana-ipv4-special-registry.
 
         """
-        private_10 = IPv4Network('10.0.0.0/8')
-        private_172 = IPv4Network('172.16.0.0/12')
-        private_192 = IPv4Network('192.168.0.0/16')
-        return (self in private_10 or
-                self in private_172 or
-                self in private_192)
+        return (self in IPv4Network('0.0.0.0/8') or
+                self in IPv4Network('10.0.0.0/8') or
+                self in IPv4Network('100.64.0.0/10') or
+                self in IPv4Network('127.0.0.0/8') or
+                self in IPv4Network('169.254.0.0/16') or
+                self in IPv4Network('172.16.0.0/12') or
+                self in IPv4Network('192.0.0.0/29') or
+                self in IPv4Network('192.0.0.170/31') or
+                self in IPv4Network('192.0.2.0/24') or
+                self in IPv4Network('192.168.0.0/16') or
+                self in IPv4Network('198.18.0.0/15') or
+                self in IPv4Network('198.51.100.0/24') or
+                self in IPv4Network('203.0.113.0/24') or
+                self in IPv4Network('240.0.0.0/4') or
+                self in IPv4Network('255.255.255.255/32'))
+
+    @property
+    def is_global(self):
+        """Test if this address is allocated for private networks.
+
+        Returns:
+            A boolean, True if the address is not reserved per
+            iana-ipv4-special-registry.
+
+        """
+        return not self.is_private
+
 
     @property
     def is_multicast(self):
@@ -1826,11 +1860,31 @@
         """Test if this address is allocated for private networks.
 
         Returns:
-            A boolean, True if the address is reserved per RFC 4193.
+            A boolean, True if the address is reserved per
+            iana-ipv6-special-registry.
 
         """
-        private_network = IPv6Network('fc00::/7')
-        return self in private_network
+        return (self in IPv6Network('::1/128') or
+                self in IPv6Network('::/128') or
+                self in IPv6Network('::ffff:0:0/96') or
+                self in IPv6Network('100::/64') or
+                self in IPv6Network('2001::/23') or
+                self in IPv6Network('2001:2::/48') or
+                self in IPv6Network('2001:db8::/32') or
+                self in IPv6Network('2001:10::/28') or
+                self in IPv6Network('fc00::/7') or
+                self in IPv6Network('fe80::/10'))
+
+    @property
+    def is_global(self):
+        """Test if this address is allocated for public networks.
+
+        Returns:
+            A boolean, true if the address is not reserved per
+            iana-ipv6-special-registry.
+
+        """
+        return not self.is_private
 
     @property
     def is_unspecified(self):
diff --git a/Lib/json/__init__.py b/Lib/json/__init__.py
--- a/Lib/json/__init__.py
+++ b/Lib/json/__init__.py
@@ -310,6 +310,11 @@
     The ``encoding`` argument is ignored and deprecated.
 
     """
+    if not isinstance(s, str):
+        raise TypeError('the JSON object must be str, not {!r}'.format(
+                            s.__class__.__name__))
+    if s.startswith(u'\ufeff'):
+        raise ValueError("Unexpected UTF-8 BOM (decode using utf-8-sig)")
     if (cls is None and object_hook is None and
             parse_int is None and parse_float is None and
             parse_constant is None and object_pairs_hook is None and not kw):
diff --git a/Lib/platform.py b/Lib/platform.py
--- a/Lib/platform.py
+++ b/Lib/platform.py
@@ -1183,6 +1183,14 @@
     '(?: \(([\d\.]+)\))?'
     ' on (.NET [\d\.]+)', re.ASCII)
 
+# IronPython covering 2.6 and 2.7
+_ironpython26_sys_version_parser = re.compile(
+    r'([\d.]+)\s*'
+    '\(IronPython\s*'
+    '[\d.]+\s*'
+    '\(([\d.]+)\) on ([\w.]+ [\d.]+(?: \(\d+-bit\))?)\)'
+)
+
 _pypy_sys_version_parser = re.compile(
     r'([\w.+]+)\s*'
     '\(#?([^,]+),\s*([\w ]+),\s*([\w :]+)\)\s*'
@@ -1220,19 +1228,24 @@
         return result
 
     # Parse it
-    if sys_version[:10] == 'IronPython':
+    if 'IronPython' in sys_version:
         # IronPython
         name = 'IronPython'
-        match = _ironpython_sys_version_parser.match(sys_version)
+        if sys_version.startswith('IronPython'):
+            match = _ironpython_sys_version_parser.match(sys_version)
+        else:
+            match = _ironpython26_sys_version_parser.match(sys_version)
+
         if match is None:
             raise ValueError(
                 'failed to parse IronPython sys.version: %s' %
                 repr(sys_version))
+
         version, alt_version, compiler = match.groups()
         buildno = ''
         builddate = ''
 
-    elif sys.platform[:4] == 'java':
+    elif sys.platform.startswith('java'):
         # Jython
         name = 'Jython'
         match = _sys_version_parser.match(sys_version)
diff --git a/Lib/pydoc.py b/Lib/pydoc.py
--- a/Lib/pydoc.py
+++ b/Lib/pydoc.py
@@ -1235,8 +1235,9 @@
                         doc = getdoc(value)
                     else:
                         doc = None
-                    push(self.docother(getattr(object, name),
-                                       name, mod, maxlen=70, doc=doc) + '\n')
+                    push(self.docother(
+                        getattr(object, name, None) or homecls.__dict__[name],
+                        name, mod, maxlen=70, doc=doc) + '\n')
             return attrs
 
         attrs = [(name, kind, cls, value)
@@ -1258,7 +1259,6 @@
             else:
                 tag = "inherited from %s" % classname(thisclass,
                                                       object.__module__)
-
             # Sort attrs by name.
             attrs.sort()
 
@@ -1273,6 +1273,7 @@
                                      lambda t: t[1] == 'data descriptor')
             attrs = spilldata("Data and other attributes %s:\n" % tag, attrs,
                               lambda t: t[1] == 'data')
+
             assert attrs == []
             attrs = inherited
 
diff --git a/Lib/telnetlib.py b/Lib/telnetlib.py
--- a/Lib/telnetlib.py
+++ b/Lib/telnetlib.py
@@ -17,13 +17,12 @@
 Note that read_all() won't read until eof -- it just reads some data
 -- but it guarantees to read at least one byte unless EOF is hit.
 
-It is possible to pass a Telnet object to select.select() in order to
-wait until more data is available.  Note that in this case,
-read_eager() may return b'' even if there was data on the socket,
-because the protocol negotiation may have eaten the data.  This is why
-EOFError is needed in some cases to distinguish between "no data" and
-"connection closed" (since the socket also appears ready for reading
-when it is closed).
+It is possible to pass a Telnet object to a selector in order to wait until
+more data is available.  Note that in this case, read_eager() may return b''
+even if there was data on the socket, because the protocol negotiation may have
+eaten the data.  This is why EOFError is needed in some cases to distinguish
+between "no data" and "connection closed" (since the socket also appears ready
+for reading when it is closed).
 
 To do:
 - option negotiation
@@ -34,10 +33,9 @@
 
 
 # Imported modules
-import errno
 import sys
 import socket
-import select
+import selectors
 
 __all__ = ["Telnet"]
 
@@ -130,6 +128,15 @@
 EXOPL = bytes([255]) # Extended-Options-List
 NOOPT = bytes([0])
 
+
+# poll/select have the advantage of not requiring any extra file descriptor,
+# contrarily to epoll/kqueue (also, they require a single syscall).
+if hasattr(selectors, 'PollSelector'):
+    _TelnetSelector = selectors.PollSelector
+else:
+    _TelnetSelector = selectors.SelectSelector
+
+
 class Telnet:
 
     """Telnet interface class.
@@ -206,7 +213,6 @@
         self.sb = 0 # flag for SB and SE sequence.
         self.sbdataq = b''
         self.option_callback = None
-        self._has_poll = hasattr(select, 'poll')
         if host is not None:
             self.open(host, port, timeout)
 
@@ -289,61 +295,6 @@
         is closed and no cooked data is available.
 
         """
-        if self._has_poll:
-            return self._read_until_with_poll(match, timeout)
-        else:
-            return self._read_until_with_select(match, timeout)
-
-    def _read_until_with_poll(self, match, timeout):
-        """Read until a given string is encountered or until timeout.
-
-        This method uses select.poll() to implement the timeout.
-        """
-        n = len(match)
-        call_timeout = timeout
-        if timeout is not None:
-            from time import time
-            time_start = time()
-        self.process_rawq()
-        i = self.cookedq.find(match)
-        if i < 0:
-            poller = select.poll()
-            poll_in_or_priority_flags = select.POLLIN | select.POLLPRI
-            poller.register(self, poll_in_or_priority_flags)
-            while i < 0 and not self.eof:
-                try:
-                    ready = poller.poll(call_timeout)
-                except OSError as e:
-                    if e.errno == errno.EINTR:
-                        if timeout is not None:
-                            elapsed = time() - time_start
-                            call_timeout = timeout-elapsed
-                        continue
-                    raise
-                for fd, mode in ready:
-                    if mode & poll_in_or_priority_flags:
-                        i = max(0, len(self.cookedq)-n)
-                        self.fill_rawq()
-                        self.process_rawq()
-                        i = self.cookedq.find(match, i)
-                if timeout is not None:
-                    elapsed = time() - time_start
-                    if elapsed >= timeout:
-                        break
-                    call_timeout = timeout-elapsed
-            poller.unregister(self)
-        if i >= 0:
-            i = i + n
-            buf = self.cookedq[:i]
-            self.cookedq = self.cookedq[i:]
-            return buf
-        return self.read_very_lazy()
-
-    def _read_until_with_select(self, match, timeout=None):
-        """Read until a given string is encountered or until timeout.
-
-        The timeout is implemented using select.select().
-        """
         n = len(match)
         self.process_rawq()
         i = self.cookedq.find(match)
@@ -352,27 +303,26 @@
             buf = self.cookedq[:i]
             self.cookedq = self.cookedq[i:]
             return buf
-        s_reply = ([self], [], [])
-        s_args = s_reply
         if timeout is not None:
-            s_args = s_args + (timeout,)
             from time import time
-            time_start = time()
-        while not self.eof and select.select(*s_args) == s_reply:
-            i = max(0, len(self.cookedq)-n)
-            self.fill_rawq()
-            self.process_rawq()
-            i = self.cookedq.find(match, i)
-            if i >= 0:
-                i = i+n
-                buf = self.cookedq[:i]
-                self.cookedq = self.cookedq[i:]
-                return buf
-            if timeout is not None:
-                elapsed = time() - time_start
-                if elapsed >= timeout:
-                    break
-                s_args = s_reply + (timeout-elapsed,)
+            deadline = time() + timeout
+        with _TelnetSelector() as selector:
+            selector.register(self, selectors.EVENT_READ)
+            while not self.eof:
+                if selector.select(timeout):
+                    i = max(0, len(self.cookedq)-n)
+                    self.fill_rawq()
+                    self.process_rawq()
+                    i = self.cookedq.find(match, i)
+                    if i >= 0:
+                        i = i+n
+                        buf = self.cookedq[:i]
+                        self.cookedq = self.cookedq[i:]
+                        return buf
+                if timeout is not None:
+                    timeout = deadline - time()
+                    if timeout < 0:
+                        break
         return self.read_very_lazy()
 
     def read_all(self):
@@ -577,29 +527,35 @@
 
     def sock_avail(self):
         """Test whether data is available on the socket."""
-        return select.select([self], [], [], 0) == ([self], [], [])
+        with _TelnetSelector() as selector:
+            selector.register(self, selectors.EVENT_READ)
+            return bool(selector.select(0))
 
     def interact(self):
         """Interaction function, emulates a very dumb telnet client."""
         if sys.platform == "win32":
             self.mt_interact()
             return
-        while 1:
-            rfd, wfd, xfd = select.select([self, sys.stdin], [], [])
-            if self in rfd:
-                try:
-                    text = self.read_eager()
-                except EOFError:
-                    print('*** Connection closed by remote host ***')
-                    break
-                if text:
-                    sys.stdout.write(text.decode('ascii'))
-                    sys.stdout.flush()
-            if sys.stdin in rfd:
-                line = sys.stdin.readline().encode('ascii')
-                if not line:
-                    break
-                self.write(line)
+        with _TelnetSelector() as selector:
+            selector.register(self, selectors.EVENT_READ)
+            selector.register(sys.stdin, selectors.EVENT_READ)
+
+            while True:
+                for key, events in selector.select():
+                    if key.fileobj is self:
+                        try:
+                            text = self.read_eager()
+                        except EOFError:
+                            print('*** Connection closed by remote host ***')
+                            return
+                        if text:
+                            sys.stdout.write(text.decode('ascii'))
+                            sys.stdout.flush()
+                    elif key.fileobj is sys.stdin:
+                        line = sys.stdin.readline().encode('ascii')
+                        if not line:
+                            return
+                        self.write(line)
 
     def mt_interact(self):
         """Multithreaded version of interact()."""
@@ -646,79 +602,6 @@
         results are undeterministic, and may depend on the I/O timing.
 
         """
-        if self._has_poll:
-            return self._expect_with_poll(list, timeout)
-        else:
-            return self._expect_with_select(list, timeout)
-
-    def _expect_with_poll(self, expect_list, timeout=None):
-        """Read until one from a list of a regular expressions matches.
-
-        This method uses select.poll() to implement the timeout.
-        """
-        re = None
-        expect_list = expect_list[:]
-        indices = range(len(expect_list))
-        for i in indices:
-            if not hasattr(expect_list[i], "search"):
-                if not re: import re
-                expect_list[i] = re.compile(expect_list[i])
-        call_timeout = timeout
-        if timeout is not None:
-            from time import time
-            time_start = time()
-        self.process_rawq()
-        m = None
-        for i in indices:
-            m = expect_list[i].search(self.cookedq)
-            if m:
-                e = m.end()
-                text = self.cookedq[:e]
-                self.cookedq = self.cookedq[e:]
-                break
-        if not m:
-            poller = select.poll()
-            poll_in_or_priority_flags = select.POLLIN | select.POLLPRI
-            poller.register(self, poll_in_or_priority_flags)
-            while not m and not self.eof:
-                try:
-                    ready = poller.poll(call_timeout)
-                except OSError as e:
-                    if e.errno == errno.EINTR:
-                        if timeout is not None:
-                            elapsed = time() - time_start
-                            call_timeout = timeout-elapsed
-                        continue
-                    raise
-                for fd, mode in ready:
-                    if mode & poll_in_or_priority_flags:
-                        self.fill_rawq()
-                        self.process_rawq()
-                        for i in indices:
-                            m = expect_list[i].search(self.cookedq)
-                            if m:
-                                e = m.end()
-                                text = self.cookedq[:e]
-                                self.cookedq = self.cookedq[e:]
-                                break
-                if timeout is not None:
-                    elapsed = time() - time_start
-                    if elapsed >= timeout:
-                        break
-                    call_timeout = timeout-elapsed
-            poller.unregister(self)
-        if m:
-            return (i, m, text)
-        text = self.read_very_lazy()
-        if not text and self.eof:
-            raise EOFError
-        return (-1, None, text)
-
-    def _expect_with_select(self, list, timeout=None):
-        """Read until one from a list of a regular expressions matches.
-
-        The timeout is implemented using select.select().
-        """
         re = None
         list = list[:]
         indices = range(len(list))
@@ -728,27 +611,27 @@
                 list[i] = re.compile(list[i])
         if timeout is not None:
             from time import time
-            time_start = time()
-        while 1:
-            self.process_rawq()
-            for i in indices:
-                m = list[i].search(self.cookedq)
-                if m:
-                    e = m.end()
-                    text = self.cookedq[:e]
-                    self.cookedq = self.cookedq[e:]
-                    return (i, m, text)
-            if self.eof:
-                break
-            if timeout is not None:
-                elapsed = time() - time_start
-                if elapsed >= timeout:
-                    break
-                s_args = ([self.fileno()], [], [], timeout-elapsed)
-                r, w, x = select.select(*s_args)
-                if not r:
-                    break
-            self.fill_rawq()
+            deadline = time() + timeout
+        with _TelnetSelector() as selector:
+            selector.register(self, selectors.EVENT_READ)
+            while not self.eof:
+                self.process_rawq()
+                for i in indices:
+                    m = list[i].search(self.cookedq)
+                    if m:
+                        e = m.end()
+                        text = self.cookedq[:e]
+                        self.cookedq = self.cookedq[e:]
+                        return (i, m, text)
+                if timeout is not None:
+                    ready = selector.select(timeout)
+                    timeout = deadline - time()
+                    if not ready:
+                        if timeout < 0:
+                            break
+                        else:
+                            continue
+                self.fill_rawq()
         text = self.read_very_lazy()
         if not text and self.eof:
             raise EOFError
diff --git a/Lib/test/test_asyncio/test_base_events.py b/Lib/test/test_asyncio/test_base_events.py
--- a/Lib/test/test_asyncio/test_base_events.py
+++ b/Lib/test/test_asyncio/test_base_events.py
@@ -5,6 +5,7 @@
 import time
 import unittest
 import unittest.mock
+from test.support import find_unused_port, IPV6_ENABLED
 
 from asyncio import base_events
 from asyncio import events
@@ -533,6 +534,7 @@
         self.assertRaises(
             OSError, self.loop.run_until_complete, coro)
 
+    @unittest.skipUnless(IPV6_ENABLED, 'IPv6 not supported or enabled')
     def test_create_datagram_endpoint_no_matching_family(self):
         coro = self.loop.create_datagram_endpoint(
             protocols.DatagramProtocol,
@@ -588,3 +590,7 @@
         self.loop._accept_connection(MyProto, sock)
         self.assertTrue(sock.close.called)
         self.assertTrue(m_log.exception.called)
+
+
+if __name__ == '__main__':
+    unittest.main()
diff --git a/Lib/test/test_asyncio/test_events.py b/Lib/test/test_asyncio/test_events.py
--- a/Lib/test/test_asyncio/test_events.py
+++ b/Lib/test/test_asyncio/test_events.py
@@ -896,8 +896,8 @@
             proto = MyWritePipeProto(loop=self.loop)
             return proto
 
-        rpipe, wpipe = os.pipe()
-        pipeobj = io.open(wpipe, 'wb', 1024)
+        rsock, wsock = self.loop._socketpair()
+        pipeobj = io.open(wsock.detach(), 'wb', 1024)
 
         @tasks.coroutine
         def connect():
@@ -913,11 +913,10 @@
         self.assertEqual('CONNECTED', proto.state)
 
         transport.write(b'1')
-        test_utils.run_briefly(self.loop)
-        data = os.read(rpipe, 1024)
+        data = self.loop.run_until_complete(self.loop.sock_recv(rsock, 1024))
         self.assertEqual(b'1', data)
 
-        os.close(rpipe)
+        rsock.close()
 
         self.loop.run_until_complete(proto.done)
         self.assertEqual('CLOSED', proto.state)
@@ -986,9 +985,6 @@
 
     @unittest.skipIf(sys.platform == 'win32',
                      "Don't support subprocess for Windows yet")
-    # Issue #19293
-    @unittest.skipIf(sys.platform.startswith("aix"),
-                     'cannot be interrupted with signal on AIX')
     def test_subprocess_interactive(self):
         proto = None
         transp = None
@@ -1087,9 +1083,6 @@
 
     @unittest.skipIf(sys.platform == 'win32',
                      "Don't support subprocess for Windows yet")
-    # Issue #19293
-    @unittest.skipIf(sys.platform.startswith("aix"),
-                     'cannot be interrupted with signal on AIX')
     def test_subprocess_kill(self):
         proto = None
         transp = None
@@ -1113,9 +1106,6 @@
 
     @unittest.skipIf(sys.platform == 'win32',
                      "Don't support subprocess for Windows yet")
-    # Issue #19293
-    @unittest.skipIf(sys.platform.startswith("aix"),
-                     'cannot be interrupted with signal on AIX')
     def test_subprocess_send_signal(self):
         proto = None
         transp = None
@@ -1233,6 +1223,26 @@
         self.loop.run_until_complete(proto.completed)
         self.assertEqual(-signal.SIGTERM, proto.returncode)
 
+    @unittest.skipIf(sys.platform == 'win32',
+                     "Don't support subprocess for Windows yet")
+    def test_subprocess_wait_no_same_group(self):
+        proto = None
+        transp = None
+
+        @tasks.coroutine
+        def connect():
+            nonlocal proto
+            # start the new process in a new session
+            transp, proto = yield from self.loop.subprocess_shell(
+                functools.partial(MySubprocessProtocol, self.loop),
+                'exit 7', stdin=None, stdout=None, stderr=None,
+                start_new_session=True)
+            self.assertIsInstance(proto, MySubprocessProtocol)
+
+        self.loop.run_until_complete(connect())
+        self.loop.run_until_complete(proto.completed)
+        self.assertEqual(7, proto.returncode)
+
 
 if sys.platform == 'win32':
     from asyncio import windows_events
diff --git a/Lib/test/test_asyncio/test_proactor_events.py b/Lib/test/test_asyncio/test_proactor_events.py
--- a/Lib/test/test_asyncio/test_proactor_events.py
+++ b/Lib/test/test_asyncio/test_proactor_events.py
@@ -478,3 +478,7 @@
         self.loop._stop_serving(sock)
         self.assertTrue(sock.close.called)
         self.proactor._stop_serving.assert_called_with(sock)
+
+
+if __name__ == '__main__':
+    unittest.main()
diff --git a/Lib/test/test_asyncio/test_selector_events.py b/Lib/test/test_asyncio/test_selector_events.py
--- a/Lib/test/test_asyncio/test_selector_events.py
+++ b/Lib/test/test_asyncio/test_selector_events.py
@@ -1483,3 +1483,7 @@
         transport._fatal_error(err)
         self.protocol.connection_refused.assert_called_with(err)
         m_exc.assert_called_with('Fatal error for %s', transport)
+
+
+if __name__ == '__main__':
+    unittest.main()
diff --git a/Lib/test/test_asyncio/test_selectors.py b/Lib/test/test_asyncio/test_selectors.py
--- a/Lib/test/test_asyncio/test_selectors.py
+++ b/Lib/test/test_asyncio/test_selectors.py
@@ -143,3 +143,7 @@
     if hasattr(selectors.DefaultSelector, 'fileno'):
         def test_fileno(self):
             self.assertIsInstance(selectors.DefaultSelector().fileno(), int)
+
+
+if __name__ == '__main__':
+    unittest.main()
diff --git a/Lib/test/test_asyncio/test_transports.py b/Lib/test/test_asyncio/test_transports.py
--- a/Lib/test/test_asyncio/test_transports.py
+++ b/Lib/test/test_asyncio/test_transports.py
@@ -53,3 +53,7 @@
         self.assertRaises(NotImplementedError, transport.send_signal, 1)
         self.assertRaises(NotImplementedError, transport.terminate)
         self.assertRaises(NotImplementedError, transport.kill)
+
+
+if __name__ == '__main__':
+    unittest.main()
diff --git a/Lib/test/test_asyncio/test_unix_events.py b/Lib/test/test_asyncio/test_unix_events.py
--- a/Lib/test/test_asyncio/test_unix_events.py
+++ b/Lib/test/test_asyncio/test_unix_events.py
@@ -266,7 +266,7 @@
         self.loop._subprocesses[7] = transp
 
         self.loop._sig_chld()
-        self.assertFalse(transp._process_exited.called)
+        self.assertTrue(transp._process_exited.called)
         self.assertFalse(m_WEXITSTATUS.called)
         self.assertFalse(m_WTERMSIG.called)
 
@@ -312,6 +312,13 @@
         fcntl_patcher.start()
         self.addCleanup(fcntl_patcher.stop)
 
+        fstat_patcher = unittest.mock.patch('os.fstat')
+        m_fstat = fstat_patcher.start()
+        st = unittest.mock.Mock()
+        st.st_mode = stat.S_IFIFO
+        m_fstat.return_value = st
+        self.addCleanup(fstat_patcher.stop)
+
     def test_ctor(self):
         tr = unix_events._UnixReadPipeTransport(
             self.loop, self.pipe, self.protocol)
@@ -768,3 +775,7 @@
         tr.write_eof()
         self.assertTrue(tr._closing)
         self.assertFalse(self.protocol.connection_lost.called)
+
+
+if __name__ == '__main__':
+    unittest.main()
diff --git a/Lib/test/test_asyncio/test_windows_events.py b/Lib/test/test_asyncio/test_windows_events.py
--- a/Lib/test/test_asyncio/test_windows_events.py
+++ b/Lib/test/test_asyncio/test_windows_events.py
@@ -93,3 +93,7 @@
                 protocols.Protocol, ADDRESS)
 
         return 'done'
+
+
+if __name__ == '__main__':
+    unittest.main()
diff --git a/Lib/test/test_asyncio/test_windows_utils.py b/Lib/test/test_asyncio/test_windows_utils.py
--- a/Lib/test/test_asyncio/test_windows_utils.py
+++ b/Lib/test/test_asyncio/test_windows_utils.py
@@ -138,3 +138,7 @@
         # allow for partial reads...
         self.assertTrue(msg.upper().rstrip().startswith(out))
         self.assertTrue(b"stderr".startswith(err))
+
+
+if __name__ == '__main__':
+    unittest.main()
diff --git a/Lib/test/test_audioop.py b/Lib/test/test_audioop.py
--- a/Lib/test/test_audioop.py
+++ b/Lib/test/test_audioop.py
@@ -1,7 +1,6 @@
 import audioop
 import sys
 import unittest
-from test.support import run_unittest
 
 def pack(width, data):
     return b''.join(v.to_bytes(width, sys.byteorder, signed=True) for v in data)
@@ -87,6 +86,7 @@
             self.assertEqual(audioop.avgpp(packs[w](9, 10, 5, 5, 0, 1), w), 10)
         self.assertEqual(audioop.avgpp(datas[1], 1), 196)
         self.assertEqual(audioop.avgpp(datas[2], 2), 50534)
+        self.assertEqual(audioop.avgpp(datas[3], 3), 12937096)
         self.assertEqual(audioop.avgpp(datas[4], 4), 3311897002)
 
     def test_rms(self):
@@ -100,6 +100,7 @@
                                    -minvalues[w], delta=1)
         self.assertEqual(audioop.rms(datas[1], 1), 77)
         self.assertEqual(audioop.rms(datas[2], 2), 20001)
+        self.assertEqual(audioop.rms(datas[3], 3), 5120523)
         self.assertEqual(audioop.rms(datas[4], 4), 1310854152)
 
     def test_cross(self):
@@ -227,10 +228,9 @@
     def test_lin2adpcm(self):
         self.assertEqual(audioop.lin2adpcm(datas[1], 1, None),
                          (b'\x07\x7f\x7f', (-221, 39)))
-        self.assertEqual(audioop.lin2adpcm(datas[2], 2, None),
-                         (b'\x07\x7f\x7f', (31, 39)))
-        self.assertEqual(audioop.lin2adpcm(datas[4], 4, None),
-                         (b'\x07\x7f\x7f', (31, 39)))
+        for w in 2, 3, 4:
+            self.assertEqual(audioop.lin2adpcm(datas[w], w, None),
+                             (b'\x07\x7f\x7f', (31, 39)))
 
         # Very cursory test
         for w in 1, 2, 3, 4:
@@ -240,10 +240,9 @@
     def test_lin2alaw(self):
         self.assertEqual(audioop.lin2alaw(datas[1], 1),
                          b'\xd5\x87\xa4\x24\xaa\x2a\x5a')
-        self.assertEqual(audioop.lin2alaw(datas[2], 2),
-                         b'\xd5\x87\xa4\x24\xaa\x2a\x55')
-        self.assertEqual(audioop.lin2alaw(datas[4], 4),
-                         b'\xd5\x87\xa4\x24\xaa\x2a\x55')
+        for w in 2, 3, 4:
+            self.assertEqual(audioop.lin2alaw(datas[w], w),
+                             b'\xd5\x87\xa4\x24\xaa\x2a\x55')
 
     def test_alaw2lin(self):
         encoded = b'\x00\x03\x24\x2a\x51\x54\x55\x58\x6b\x71\x7f'\
@@ -262,10 +261,9 @@
     def test_lin2ulaw(self):
         self.assertEqual(audioop.lin2ulaw(datas[1], 1),
                          b'\xff\xad\x8e\x0e\x80\x00\x67')
-        self.assertEqual(audioop.lin2ulaw(datas[2], 2),
-                         b'\xff\xad\x8e\x0e\x80\x00\x7e')
-        self.assertEqual(audioop.lin2ulaw(datas[4], 4),
-                         b'\xff\xad\x8e\x0e\x80\x00\x7e')
+        for w in 2, 3, 4:
+            self.assertEqual(audioop.lin2ulaw(datas[w], w),
+                             b'\xff\xad\x8e\x0e\x80\x00\x7e')
 
     def test_ulaw2lin(self):
         encoded = b'\x00\x0e\x28\x3f\x57\x6a\x76\x7c\x7e\x7f'\
@@ -416,8 +414,5 @@
             self.assertRaises(audioop.error, audioop.alaw2lin, data, size)
             self.assertRaises(audioop.error, audioop.adpcm2lin, data, size, state)
 
-def test_main():
-    run_unittest(TestAudioop)
-
 if __name__ == '__main__':
-    test_main()
+    unittest.main()
diff --git a/Lib/test/test_descr.py b/Lib/test/test_descr.py
--- a/Lib/test/test_descr.py
+++ b/Lib/test/test_descr.py
@@ -4519,8 +4519,10 @@
 
         global Y
         class Y:
-            pass
+            class Inside:
+                pass
         self.assertEqual(Y.__qualname__, 'Y')
+        self.assertEqual(Y.Inside.__qualname__, 'Y.Inside')
 
     def test_qualname_dict(self):
         ns = {'__qualname__': 'some.name'}
diff --git a/Lib/test/test_enum.py b/Lib/test/test_enum.py
--- a/Lib/test/test_enum.py
+++ b/Lib/test/test_enum.py
@@ -1,8 +1,11 @@
 import enum
+import inspect
+import pydoc
 import unittest
 from collections import OrderedDict
+from enum import Enum, IntEnum, EnumMeta, unique
+from io import StringIO
 from pickle import dumps, loads, PicklingError
-from enum import Enum, IntEnum, unique
 
 # for pickle tests
 try:
@@ -1195,5 +1198,117 @@
                 turkey = 3
 
 
+expected_help_output = """
+Help on class Color in module %s:
+
+class Color(enum.Enum)
+ |  Method resolution order:
+ |      Color
+ |      enum.Enum
+ |      builtins.object
+ |\x20\x20
+ |  Data and other attributes defined here:
+ |\x20\x20
+ |  blue = <Color.blue: 3>
+ |\x20\x20
+ |  green = <Color.green: 2>
+ |\x20\x20
+ |  red = <Color.red: 1>
+ |\x20\x20
+ |  ----------------------------------------------------------------------
+ |  Data descriptors inherited from enum.Enum:
+ |\x20\x20
+ |  name
+ |      The name of the Enum member.
+ |\x20\x20
+ |  value
+ |      The value of the Enum member.
+ |\x20\x20
+ |  ----------------------------------------------------------------------
+ |  Data descriptors inherited from enum.EnumMeta:
+ |\x20\x20
+ |  __members__
+ |      Returns a mapping of member name->value.
+ |\x20\x20\x20\x20\x20\x20
+ |      This mapping lists all enum members, including aliases. Note that this
+ |      is a read-only view of the internal mapping.
+""".strip()
+
+class TestStdLib(unittest.TestCase):
+
+    class Color(Enum):
+        red = 1
+        green = 2
+        blue = 3
+
+    def test_pydoc(self):
+        # indirectly test __objclass__
+        expected_text = expected_help_output % __name__
+        output = StringIO()
+        helper = pydoc.Helper(output=output)
+        helper(self.Color)
+        result = output.getvalue().strip()
+        if result != expected_text:
+            print_diffs(expected_text, result)
+            self.fail("outputs are not equal, see diff above")
+
+    def test_inspect_getmembers(self):
+        values = dict((
+                ('__class__', EnumMeta),
+                ('__doc__', None),
+                ('__members__', self.Color.__members__),
+                ('__module__', __name__),
+                ('blue', self.Color.blue),
+                ('green', self.Color.green),
+                ('name', Enum.__dict__['name']),
+                ('red', self.Color.red),
+                ('value', Enum.__dict__['value']),
+                ))
+        result = dict(inspect.getmembers(self.Color))
+        self.assertEqual(values.keys(), result.keys())
+        failed = False
+        for k in values.keys():
+            if result[k] != values[k]:
+                print()
+                print('\n%s\n     key: %s\n  result: %s\nexpected: %s\n%s\n' %
+                        ('=' * 75, k, result[k], values[k], '=' * 75), sep='')
+                failed = True
+        if failed:
+            self.fail("result does not equal expected, see print above")
+
+    def test_inspect_classify_class_attrs(self):
+        # indirectly test __objclass__
+        from inspect import Attribute
+        values = [
+                Attribute(name='__class__', kind='data',
+                    defining_class=object, object=EnumMeta),
+                Attribute(name='__doc__', kind='data',
+                    defining_class=self.Color, object=None),
+                Attribute(name='__members__', kind='property',
+                    defining_class=EnumMeta, object=EnumMeta.__members__),
+                Attribute(name='__module__', kind='data',
+                    defining_class=self.Color, object=__name__),
+                Attribute(name='blue', kind='data',
+                    defining_class=self.Color, object=self.Color.blue),
+                Attribute(name='green', kind='data',
+                    defining_class=self.Color, object=self.Color.green),
+                Attribute(name='red', kind='data',
+                    defining_class=self.Color, object=self.Color.red),
+                Attribute(name='name', kind='data',
+                    defining_class=Enum, object=Enum.__dict__['name']),
+                Attribute(name='value', kind='data',
+                    defining_class=Enum, object=Enum.__dict__['value']),
+                ]
+        values.sort(key=lambda item: item.name)
+        result = list(inspect.classify_class_attrs(self.Color))
+        result.sort(key=lambda item: item.name)
+        failed = False
+        for v, r in zip(values, result):
+            if r != v:
+                print('\n%s\n%s\n%s\n%s\n' % ('=' * 75, r, v, '=' * 75), sep='')
+                failed = True
+        if failed:
+            self.fail("result does not equal expected, see print above")
+
 if __name__ == '__main__':
     unittest.main()
diff --git a/Lib/test/test_faulthandler.py b/Lib/test/test_faulthandler.py
--- a/Lib/test/test_faulthandler.py
+++ b/Lib/test/test_faulthandler.py
@@ -72,9 +72,9 @@
         Raise an error if the output doesn't match the expected format.
         """
         if all_threads:
-            header = 'Current thread XXX'
+            header = 'Current thread XXX (most recent call first)'
         else:
-            header = 'Traceback (most recent call first)'
+            header = 'Stack (most recent call first)'
         regex = """
 ^Fatal Python error: {name}
 
@@ -306,7 +306,7 @@
         else:
             lineno = 8
         expected = [
-            'Traceback (most recent call first):',
+            'Stack (most recent call first):',
             '  File "<string>", line %s in funcB' % lineno,
             '  File "<string>", line 11 in funcA',
             '  File "<string>", line 13 in <module>'
@@ -338,7 +338,7 @@
             func_name=func_name,
         )
         expected = [
-            'Traceback (most recent call first):',
+            'Stack (most recent call first):',
             '  File "<string>", line 4 in %s' % truncated,
             '  File "<string>", line 6 in <module>'
         ]
@@ -392,13 +392,13 @@
         else:
             lineno = 10
         regex = """
-^Thread 0x[0-9a-f]+:
+^Thread 0x[0-9a-f]+ \(most recent call first\):
 (?:  File ".*threading.py", line [0-9]+ in [_a-z]+
 ){{1,3}}  File "<string>", line 23 in run
   File ".*threading.py", line [0-9]+ in _bootstrap_inner
   File ".*threading.py", line [0-9]+ in _bootstrap
 
-Current thread XXX:
+Current thread XXX \(most recent call first\):
   File "<string>", line {lineno} in dump
   File "<string>", line 28 in <module>$
 """.strip()
@@ -461,7 +461,7 @@
             count = loops
             if repeat:
                 count *= 2
-            header = r'Timeout \(%s\)!\nThread 0x[0-9a-f]+:\n' % timeout_str
+            header = r'Timeout \(%s\)!\nThread 0x[0-9a-f]+ \(most recent call first\):\n' % timeout_str
             regex = expected_traceback(9, 20, header, min_count=count)
             self.assertRegex(trace, regex)
         else:
@@ -563,9 +563,9 @@
         trace = '\n'.join(trace)
         if not unregister:
             if all_threads:
-                regex = 'Current thread XXX:\n'
+                regex = 'Current thread XXX \(most recent call first\):\n'
             else:
-                regex = 'Traceback \(most recent call first\):\n'
+                regex = 'Stack \(most recent call first\):\n'
             regex = expected_traceback(7, 28, regex)
             self.assertRegex(trace, regex)
         else:
diff --git a/Lib/test/test_ftplib.py b/Lib/test/test_ftplib.py
--- a/Lib/test/test_ftplib.py
+++ b/Lib/test/test_ftplib.py
@@ -92,6 +92,7 @@
         self.next_response = ''
         self.next_data = None
         self.rest = None
+        self.next_retr_data = RETR_DATA
         self.push('220 welcome')
 
     def collect_incoming_data(self, data):
@@ -221,7 +222,7 @@
             offset = int(self.rest)
         else:
             offset = 0
-        self.dtp.push(RETR_DATA[offset:])
+        self.dtp.push(self.next_retr_data[offset:])
         self.dtp.close_when_done()
         self.rest = None
 
@@ -243,6 +244,11 @@
         self.dtp.push(MLSD_DATA)
         self.dtp.close_when_done()
 
+    def cmd_setlongretr(self, arg):
+        # For testing. Next RETR will return long line.
+        self.next_retr_data = 'x' * int(arg)
+        self.push('125 setlongretr ok')
+
 
 class DummyFTPServer(asyncore.dispatcher, threading.Thread):
 
@@ -759,6 +765,20 @@
         self.assertEqual(ftplib.parse257('257 "/foo/b""ar"'), '/foo/b"ar')
         self.assertEqual(ftplib.parse257('257 "/foo/b""ar" created'), '/foo/b"ar')
 
+    def test_line_too_long(self):
+        self.assertRaises(ftplib.Error, self.client.sendcmd,
+                          'x' * self.client.maxline * 2)
+
+    def test_retrlines_too_long(self):
+        self.client.sendcmd('SETLONGRETR %d' % (self.client.maxline * 2))
+        received = []
+        self.assertRaises(ftplib.Error,
+                          self.client.retrlines, 'retr', received.append)
+
+    def test_storlines_too_long(self):
+        f = io.BytesIO(b'x' * self.client.maxline * 2)
+        self.assertRaises(ftplib.Error, self.client.storlines, 'stor', f)
+
 
 class TestIPv6Environment(TestCase):
 
diff --git a/Lib/test/test_funcattrs.py b/Lib/test/test_funcattrs.py
--- a/Lib/test/test_funcattrs.py
+++ b/Lib/test/test_funcattrs.py
@@ -9,7 +9,9 @@
             pass
         global inner_global_function
         def inner_global_function():
-            pass
+            def inner_function2():
+                pass
+            return inner_function2
         return LocalClass
     return lambda: inner_function
 
@@ -120,6 +122,7 @@
         self.assertEqual(global_function()()().__qualname__,
                          'global_function.<locals>.inner_function.<locals>.LocalClass')
         self.assertEqual(inner_global_function.__qualname__, 'inner_global_function')
+        self.assertEqual(inner_global_function().__qualname__, 'inner_global_function.<locals>.inner_function2')
         self.b.__qualname__ = 'c'
         self.assertEqual(self.b.__qualname__, 'c')
         self.b.__qualname__ = 'd'
diff --git a/Lib/test/test_hashlib.py b/Lib/test/test_hashlib.py
--- a/Lib/test/test_hashlib.py
+++ b/Lib/test/test_hashlib.py
@@ -84,26 +84,30 @@
                 if constructor:
                     constructors.add(constructor)
 
+        def add_builtin_constructor(name):
+            constructor = getattr(hashlib, "__get_builtin_constructor")(name)
+            self.constructors_to_test[name].add(constructor)
+
         _md5 = self._conditional_import_module('_md5')
         if _md5:
-            self.constructors_to_test['md5'].add(_md5.md5)
+            add_builtin_constructor('md5')
         _sha1 = self._conditional_import_module('_sha1')
         if _sha1:
-            self.constructors_to_test['sha1'].add(_sha1.sha1)
+            add_builtin_constructor('sha1')
         _sha256 = self._conditional_import_module('_sha256')
         if _sha256:
-            self.constructors_to_test['sha224'].add(_sha256.sha224)
-            self.constructors_to_test['sha256'].add(_sha256.sha256)
+            add_builtin_constructor('sha224')
+            add_builtin_constructor('sha256')
         _sha512 = self._conditional_import_module('_sha512')
         if _sha512:
-            self.constructors_to_test['sha384'].add(_sha512.sha384)
-            self.constructors_to_test['sha512'].add(_sha512.sha512)
+            add_builtin_constructor('sha384')
+            add_builtin_constructor('sha512')
         _sha3 = self._conditional_import_module('_sha3')
         if _sha3:
-            self.constructors_to_test['sha3_224'].add(_sha3.sha3_224)
-            self.constructors_to_test['sha3_256'].add(_sha3.sha3_256)
-            self.constructors_to_test['sha3_384'].add(_sha3.sha3_384)
-            self.constructors_to_test['sha3_512'].add(_sha3.sha3_512)
+            add_builtin_constructor('sha3_224')
+            add_builtin_constructor('sha3_256')
+            add_builtin_constructor('sha3_384')
+            add_builtin_constructor('sha3_512')
 
         super(HashLibTestCase, self).__init__(*args, **kwargs)
 
@@ -132,8 +136,10 @@
         self.assertRaises(TypeError, hashlib.new, 1)
 
     def test_get_builtin_constructor(self):
-        get_builtin_constructor = hashlib.__dict__[
-                '__get_builtin_constructor']
+        get_builtin_constructor = getattr(hashlib,
+                                          '__get_builtin_constructor')
+        builtin_constructor_cache = getattr(hashlib,
+                                            '__builtin_constructor_cache')
         self.assertRaises(ValueError, get_builtin_constructor, 'test')
         try:
             import _md5
@@ -141,6 +147,8 @@
             pass
         # This forces an ImportError for "import _md5" statements
         sys.modules['_md5'] = None
+        # clear the cache
+        builtin_constructor_cache.clear()
         try:
             self.assertRaises(ValueError, get_builtin_constructor, 'md5')
         finally:
@@ -149,6 +157,9 @@
             else:
                 del sys.modules['_md5']
         self.assertRaises(TypeError, get_builtin_constructor, 3)
+        constructor = get_builtin_constructor('md5')
+        self.assertIs(constructor, _md5.md5)
+        self.assertEqual(sorted(builtin_constructor_cache), ['MD5', 'md5'])
 
     def test_hexdigest(self):
         for cons in self.hash_constructors:
diff --git a/Lib/test/test_inspect.py b/Lib/test/test_inspect.py
--- a/Lib/test/test_inspect.py
+++ b/Lib/test/test_inspect.py
@@ -667,9 +667,19 @@
                 return 'eggs'
         should_find_dca = inspect.Attribute('ham', 'data', VA, VA.__dict__['ham'])
         self.assertIn(should_find_dca, inspect.classify_class_attrs(VA))
-        should_find_ga = inspect.Attribute('ham', 'data', VA, 'spam')
+        should_find_ga = inspect.Attribute('ham', 'data', Meta, 'spam')
         self.assertIn(should_find_ga, inspect.classify_class_attrs(VA))
 
+    def test_classify_metaclass_class_attribute(self):
+        class Meta(type):
+            fish = 'slap'
+            def __dir__(self):
+                return ['__class__', '__modules__', '__name__', 'fish']
+        class Class(metaclass=Meta):
+            pass
+        should_find = inspect.Attribute('fish', 'data', Meta, 'slap')
+        self.assertIn(should_find, inspect.classify_class_attrs(Class))
+
     def test_classify_VirtualAttribute(self):
         class Meta(type):
             def __dir__(cls):
@@ -680,7 +690,7 @@
                 return super().__getattr(name)
         class Class(metaclass=Meta):
             pass
-        should_find = inspect.Attribute('BOOM', 'data', Class, 42)
+        should_find = inspect.Attribute('BOOM', 'data', Meta, 42)
         self.assertIn(should_find, inspect.classify_class_attrs(Class))
 
     def test_classify_VirtualAttribute_multi_classes(self):
@@ -711,9 +721,9 @@
         class Class2(Class1, metaclass=Meta3):
             pass
 
-        should_find1 = inspect.Attribute('one', 'data', Class1, 1)
-        should_find2 = inspect.Attribute('two', 'data', Class2, 2)
-        should_find3 = inspect.Attribute('three', 'data', Class2, 3)
+        should_find1 = inspect.Attribute('one', 'data', Meta1, 1)
+        should_find2 = inspect.Attribute('two', 'data', Meta2, 2)
+        should_find3 = inspect.Attribute('three', 'data', Meta3, 3)
         cca = inspect.classify_class_attrs(Class2)
         for sf in (should_find1, should_find2, should_find3):
             self.assertIn(sf, cca)
diff --git a/Lib/test/test_ipaddress.py b/Lib/test/test_ipaddress.py
--- a/Lib/test/test_ipaddress.py
+++ b/Lib/test/test_ipaddress.py
@@ -1319,6 +1319,11 @@
         self.assertEqual(True, ipaddress.ip_network(
                 '127.42.0.0/16').is_loopback)
         self.assertEqual(False, ipaddress.ip_network('128.0.0.0').is_loopback)
+        self.assertEqual(True, ipaddress.ip_network('100.64.0.0/10').is_private)
+        self.assertEqual(True,
+                         ipaddress.ip_network('192.0.2.128/25').is_private)
+        self.assertEqual(True,
+                         ipaddress.ip_network('192.0.3.0/24').is_global)
 
         # test addresses
         self.assertEqual(True, ipaddress.ip_address('0.0.0.0').is_unspecified)
@@ -1384,6 +1389,10 @@
         self.assertEqual(False, ipaddress.ip_network('::1').is_unspecified)
         self.assertEqual(False, ipaddress.ip_network('::/127').is_unspecified)
 
+        self.assertEqual(True,
+                         ipaddress.ip_network('2001::1/128').is_private)
+        self.assertEqual(True,
+                         ipaddress.ip_network('200::1/128').is_global)
         # test addresses
         self.assertEqual(True, ipaddress.ip_address('ffff::').is_multicast)
         self.assertEqual(True, ipaddress.ip_address(2**128 - 1).is_multicast)
diff --git a/Lib/test/test_json/test_decode.py b/Lib/test/test_json/test_decode.py
--- a/Lib/test/test_json/test_decode.py
+++ b/Lib/test/test_json/test_decode.py
@@ -1,5 +1,5 @@
 import decimal
-from io import StringIO
+from io import StringIO, BytesIO
 from collections import OrderedDict
 from test.test_json import PyTest, CTest
 
@@ -70,5 +70,26 @@
         msg = 'escape'
         self.assertRaisesRegex(ValueError, msg, self.loads, s)
 
+    def test_invalid_input_type(self):
+        msg = 'the JSON object must be str'
+        for value in [1, 3.14, b'bytes', b'\xff\x00', [], {}, None]:
+            self.assertRaisesRegex(TypeError, msg, self.loads, value)
+        with self.assertRaisesRegex(TypeError, msg):
+            self.json.load(BytesIO(b'[1,2,3]'))
+
+    def test_string_with_utf8_bom(self):
+        # see #18958
+        bom_json = "[1,2,3]".encode('utf-8-sig').decode('utf-8')
+        with self.assertRaises(ValueError) as cm:
+            self.loads(bom_json)
+        self.assertIn('BOM', str(cm.exception))
+        with self.assertRaises(ValueError) as cm:
+            self.json.load(StringIO(bom_json))
+        self.assertIn('BOM', str(cm.exception))
+        # make sure that the BOM is not detected in the middle of a string
+        bom_in_str = '"{}"'.format(''.encode('utf-8-sig').decode('utf-8'))
+        self.assertEqual(self.loads(bom_in_str), '\ufeff')
+        self.assertEqual(self.json.load(StringIO(bom_in_str)), '\ufeff')
+
 class TestPyDecode(TestDecode, PyTest): pass
 class TestCDecode(TestDecode, CTest): pass
diff --git a/Lib/test/test_platform.py b/Lib/test/test_platform.py
--- a/Lib/test/test_platform.py
+++ b/Lib/test/test_platform.py
@@ -91,15 +91,28 @@
                 ("CPython", "2.6.1", "tags/r261", "67515",
                  ('r261:67515', 'Dec  6 2008 15:26:00'),
                  'GCC 4.0.1 (Apple Computer, Inc. build 5370)'),
+
             ("IronPython 2.0 (2.0.0.0) on .NET 2.0.50727.3053", None, "cli")
             :
                 ("IronPython", "2.0.0", "", "", ("", ""),
                  ".NET 2.0.50727.3053"),
+
+            ("2.6.1 (IronPython 2.6.1 (2.6.10920.0) on .NET 2.0.50727.1433)", None, "cli")
+            :
+                ("IronPython", "2.6.1", "", "", ("", ""),
+                 ".NET 2.0.50727.1433"),
+
+            ("2.7.4 (IronPython 2.7.4 (2.7.0.40) on Mono 4.0.30319.1 (32-bit))", None, "cli")
+            :
+                ("IronPython", "2.7.4", "", "", ("", ""),
+                 "Mono 4.0.30319.1 (32-bit)"),
+
             ("2.5 (trunk:6107, Mar 26 2009, 13:02:18) \n[Java HotSpot(TM) Client VM (\"Apple Computer, Inc.\")]",
             ('Jython', 'trunk', '6107'), "java1.5.0_16")
             :
                 ("Jython", "2.5.0", "trunk", "6107",
                  ('trunk:6107', 'Mar 26 2009'), "java1.5.0_16"),
+
             ("2.5.2 (63378, Mar 26 2009, 18:03:29)\n[PyPy 1.0.0]",
              ('PyPy', 'trunk', '63378'), self.save_platform)
             :
diff --git a/Lib/test/test_pydoc.py b/Lib/test/test_pydoc.py
--- a/Lib/test/test_pydoc.py
+++ b/Lib/test/test_pydoc.py
@@ -11,6 +11,7 @@
 import string
 import test.support
 import time
+import types
 import unittest
 import xml.etree
 import textwrap
@@ -208,6 +209,75 @@
 # output pattern for module with bad imports
 badimport_pattern = "problem in %s - ImportError: No module named %r"
 
+expected_dynamicattribute_pattern = """
+Help on class DA in module %s:
+
+class DA(builtins.object)
+ |  Data descriptors defined here:
+ |\x20\x20
+ |  __dict__%s
+ |\x20\x20
+ |  __weakref__%s
+ |\x20\x20
+ |  ham
+ |\x20\x20
+ |  ----------------------------------------------------------------------
+ |  Data and other attributes inherited from Meta:
+ |\x20\x20
+ |  ham = 'spam'
+""".strip()
+
+expected_virtualattribute_pattern1 = """
+Help on class Class in module %s:
+
+class Class(builtins.object)
+ |  Data and other attributes inherited from Meta:
+ |\x20\x20
+ |  LIFE = 42
+""".strip()
+
+expected_virtualattribute_pattern2 = """
+Help on class Class1 in module %s:
+
+class Class1(builtins.object)
+ |  Data and other attributes inherited from Meta1:
+ |\x20\x20
+ |  one = 1
+""".strip()
+
+expected_virtualattribute_pattern3 = """
+Help on class Class2 in module %s:
+
+class Class2(Class1)
+ |  Method resolution order:
+ |      Class2
+ |      Class1
+ |      builtins.object
+ |\x20\x20
+ |  Data and other attributes inherited from Meta1:
+ |\x20\x20
+ |  one = 1
+ |\x20\x20
+ |  ----------------------------------------------------------------------
+ |  Data and other attributes inherited from Meta3:
+ |\x20\x20
+ |  three = 3
+ |\x20\x20
+ |  ----------------------------------------------------------------------
+ |  Data and other attributes inherited from Meta2:
+ |\x20\x20
+ |  two = 2
+""".strip()
+
+expected_missingattribute_pattern = """
+Help on class C in module %s:
+
+class C(builtins.object)
+ |  Data and other attributes defined here:
+ |\x20\x20
+ |  here = 'present!'
+""".strip()
+
 def run_pydoc(module_name, *args, **env):
     """
     Runs pydoc on the specified module. Returns the stripped
@@ -636,6 +706,127 @@
         self.assertEqual(sorted(pydoc.Helper.keywords),
                          sorted(keyword.kwlist))
 
+class PydocWithMetaClasses(unittest.TestCase):
+    @unittest.skipIf(sys.flags.optimize >= 2,
+                     "Docstrings are omitted with -O2 and above")
+    @unittest.skipIf(hasattr(sys, 'gettrace') and sys.gettrace(),
+                     'trace function introduces __locals__ unexpectedly')
+    def test_DynamicClassAttribute(self):
+        class Meta(type):
+            def __getattr__(self, name):
+                if name == 'ham':
+                    return 'spam'
+                return super().__getattr__(name)
+        class DA(metaclass=Meta):
+            @types.DynamicClassAttribute
+            def ham(self):
+                return 'eggs'
+        expected_text_data_docstrings = tuple('\n |      ' + s if s else ''
+                                      for s in expected_data_docstrings)
+        output = StringIO()
+        helper = pydoc.Helper(output=output)
+        helper(DA)
+        expected_text = expected_dynamicattribute_pattern % (
+                (__name__,) + expected_text_data_docstrings[:2])
+        result = output.getvalue().strip()
+        if result != expected_text:
+            print_diffs(expected_text, result)
+            self.fail("outputs are not equal, see diff above")
+
+    @unittest.skipIf(sys.flags.optimize >= 2,
+                     "Docstrings are omitted with -O2 and above")
+    @unittest.skipIf(hasattr(sys, 'gettrace') and sys.gettrace(),
+                     'trace function introduces __locals__ unexpectedly')
+    def test_virtualClassAttributeWithOneMeta(self):
+        class Meta(type):
+            def __dir__(cls):
+                return ['__class__', '__module__', '__name__', 'LIFE']
+            def __getattr__(self, name):
+                if name =='LIFE':
+                    return 42
+                return super().__getattr(name)
+        class Class(metaclass=Meta):
+            pass
+        output = StringIO()
+        helper = pydoc.Helper(output=output)
+        helper(Class)
+        expected_text = expected_virtualattribute_pattern1 % __name__
+        result = output.getvalue().strip()
+        if result != expected_text:
+            print_diffs(expected_text, result)
+            self.fail("outputs are not equal, see diff above")
+
+    @unittest.skipIf(sys.flags.optimize >= 2,
+                     "Docstrings are omitted with -O2 and above")
+    @unittest.skipIf(hasattr(sys, 'gettrace') and sys.gettrace(),
+                     'trace function introduces __locals__ unexpectedly')
+    def test_virtualClassAttributeWithTwoMeta(self):
+        class Meta1(type):
+            def __dir__(cls):
+                return ['__class__', '__module__', '__name__', 'one']
+            def __getattr__(self, name):
+                if name =='one':
+                    return 1
+                return super().__getattr__(name)
+        class Meta2(type):
+            def __dir__(cls):
+                return ['__class__', '__module__', '__name__', 'two']
+            def __getattr__(self, name):
+                if name =='two':
+                    return 2
+                return super().__getattr__(name)
+        class Meta3(Meta1, Meta2):
+            def __dir__(cls):
+                return list(sorted(set(
+                    ['__class__', '__module__', '__name__', 'three'] +
+                    Meta1.__dir__(cls) + Meta2.__dir__(cls))))
+            def __getattr__(self, name):
+                if name =='three':
+                    return 3
+                return super().__getattr__(name)
+        class Class1(metaclass=Meta1):
+            pass
+        class Class2(Class1, metaclass=Meta3):
+            pass
+        fail1 = fail2 = False
+        output = StringIO()
+        helper = pydoc.Helper(output=output)
+        helper(Class1)
+        expected_text1 = expected_virtualattribute_pattern2 % __name__
+        result1 = output.getvalue().strip()
+        if result1 != expected_text1:
+            print_diffs(expected_text1, result1)
+            fail1 = True
+        output = StringIO()
+        helper = pydoc.Helper(output=output)
+        helper(Class2)
+        expected_text2 = expected_virtualattribute_pattern3 % __name__
+        result2 = output.getvalue().strip()
+        if result2 != expected_text2:
+            print_diffs(expected_text2, result2)
+            fail2 = True
+        if fail1 or fail2:
+            self.fail("outputs are not equal, see diff above")
+
+    @unittest.skipIf(sys.flags.optimize >= 2,
+                     "Docstrings are omitted with -O2 and above")
+    @unittest.skipIf(hasattr(sys, 'gettrace') and sys.gettrace(),
+                     'trace function introduces __locals__ unexpectedly')
+    def test_buggy_dir(self):
+        class M(type):
+            def __dir__(cls):
+                return ['__class__', '__name__', 'missing', 'here']
+        class C(metaclass=M):
+            here = 'present!'
+        output = StringIO()
+        helper = pydoc.Helper(output=output)
+        helper(C)
+        expected_text = expected_missingattribute_pattern % __name__
+        result = output.getvalue().strip()
+        if result != expected_text:
+            print_diffs(expected_text, result)
+            self.fail("outputs are not equal, see diff above")
+
 @reap_threads
 def test_main():
     try:
@@ -645,6 +836,7 @@
                                   PydocServerTest,
                                   PydocUrlHandlerTest,
                                   TestHelper,
+                                  PydocWithMetaClasses,
                                   )
     finally:
         reap_children()
diff --git a/Lib/test/test_re.py b/Lib/test/test_re.py
--- a/Lib/test/test_re.py
+++ b/Lib/test/test_re.py
@@ -1104,6 +1104,28 @@
                 self.assertEqual(re.compile(pattern, re.S).findall(b'xyz'),
                                  [b'xyz'], msg=pattern)
 
+    def test_match_repr(self):
+        for string in '[abracadabra]', S('[abracadabra]'):
+            m = re.search(r'(.+)(.*?)\1', string)
+            self.assertEqual(repr(m), "<%s.%s object; "
+                             "span=(1, 12), match='abracadabra'>" %
+                             (type(m).__module__, type(m).__qualname__))
+        for string in (b'[abracadabra]', B(b'[abracadabra]'),
+                       bytearray(b'[abracadabra]'),
+                       memoryview(b'[abracadabra]')):
+            m = re.search(rb'(.+)(.*?)\1', string)
+            self.assertEqual(repr(m), "<%s.%s object; "
+                             "span=(1, 12), match=b'abracadabra'>" %
+                             (type(m).__module__, type(m).__qualname__))
+
+        first, second = list(re.finditer("(aa)|(bb)", "aa bb"))
+        self.assertEqual(repr(first), "<%s.%s object; "
+                         "span=(0, 2), match='aa'>" %
+                         (type(second).__module__, type(first).__qualname__))
+        self.assertEqual(repr(second), "<%s.%s object; "
+                         "span=(3, 5), match='bb'>" %
+                         (type(second).__module__, type(second).__qualname__))
+
 
     def test_bug_2537(self):
         # issue 2537: empty submatches
diff --git a/Lib/test/test_resource.py b/Lib/test/test_resource.py
--- a/Lib/test/test_resource.py
+++ b/Lib/test/test_resource.py
@@ -1,3 +1,5 @@
+import sys
+import os
 import unittest
 from test import support
 import time
@@ -129,6 +131,29 @@
         self.assertIsInstance(pagesize, int)
         self.assertGreaterEqual(pagesize, 0)
 
+    @unittest.skipUnless(sys.platform == 'linux', 'test requires Linux')
+    def test_linux_constants(self):
+        self.assertIsInstance(resource.RLIMIT_MSGQUEUE, int)
+        self.assertIsInstance(resource.RLIMIT_NICE, int)
+        self.assertIsInstance(resource.RLIMIT_RTPRIO, int)
+        self.assertIsInstance(resource.RLIMIT_RTTIME, int)
+        self.assertIsInstance(resource.RLIMIT_SIGPENDING, int)
+
+
+    @unittest.skipUnless(hasattr(resource, 'prlimit'), 'no prlimit')
+    def test_prlimit(self):
+        self.assertRaises(TypeError, resource.prlimit)
+        if os.geteuid() != 0:
+            self.assertRaises(PermissionError, resource.prlimit,
+                              1, resource.RLIMIT_AS)
+        self.assertRaises(ProcessLookupError, resource.prlimit,
+                          -1, resource.RLIMIT_AS)
+        limit = resource.getrlimit(resource.RLIMIT_AS)
+        self.assertEqual(resource.prlimit(0, resource.RLIMIT_AS), limit)
+        self.assertEqual(resource.prlimit(0, resource.RLIMIT_AS, limit),
+                         limit)
+
+
 def test_main(verbose=None):
     support.run_unittest(ResourceTest)
 
diff --git a/Lib/test/test_telnetlib.py b/Lib/test/test_telnetlib.py
--- a/Lib/test/test_telnetlib.py
+++ b/Lib/test/test_telnetlib.py
@@ -1,10 +1,9 @@
 import socket
-import select
+import selectors
 import telnetlib
 import time
 import contextlib
 
-import unittest
 from unittest import TestCase
 from test import support
 threading = support.import_module('threading')
@@ -112,40 +111,32 @@
         self._messages += out.getvalue()
         return
 
-def mock_select(*s_args):
-    block = False
-    for l in s_args:
-        for fob in l:
-            if isinstance(fob, TelnetAlike):
-                block = fob.sock.block
-    if block:
-        return [[], [], []]
-    else:
-        return s_args
-
-class MockPoller(object):
-    test_case = None  # Set during TestCase setUp.
+class MockSelector(selectors.BaseSelector):
 
     def __init__(self):
-        self._file_objs = []
+        super().__init__()
+        self.keys = {}
 
-    def register(self, fd, eventmask):
-        self.test_case.assertTrue(hasattr(fd, 'fileno'), fd)
-        self.test_case.assertEqual(eventmask, select.POLLIN|select.POLLPRI)
-        self._file_objs.append(fd)
+    def register(self, fileobj, events, data=None):
+        key = selectors.SelectorKey(fileobj, 0, events, data)
+        self.keys[fileobj] = key
+        return key
 
-    def poll(self, timeout=None):
+    def unregister(self, fileobj):
+        key = self.keys.pop(fileobj)
+        return key
+
+    def select(self, timeout=None):
         block = False
-        for fob in self._file_objs:
-            if isinstance(fob, TelnetAlike):
-                block = fob.sock.block
+        for fileobj in self.keys:
+            if isinstance(fileobj, TelnetAlike):
+                block = fileobj.sock.block
+                break
         if block:
             return []
         else:
-            return zip(self._file_objs, [select.POLLIN]*len(self._file_objs))
+            return [(key, key.events) for key in self.keys.values()]
 
-    def unregister(self, fd):
-        self._file_objs.remove(fd)
 
 @contextlib.contextmanager
 def test_socket(reads):
@@ -159,7 +150,7 @@
         socket.create_connection = old_conn
     return
 
-def test_telnet(reads=(), cls=TelnetAlike, use_poll=None):
+def test_telnet(reads=(), cls=TelnetAlike):
     ''' return a telnetlib.Telnet object that uses a SocketStub with
         reads queued up to be read '''
     for x in reads:
@@ -167,29 +158,14 @@
     with test_socket(reads):
         telnet = cls('dummy', 0)
         telnet._messages = '' # debuglevel output
-        if use_poll is not None:
-            if use_poll and not telnet._has_poll:
-                raise unittest.SkipTest('select.poll() required.')
-            telnet._has_poll = use_poll
     return telnet
 
-
 class ExpectAndReadTestCase(TestCase):
     def setUp(self):
-        self.old_select = select.select
-        select.select = mock_select
-        self.old_poll = False
-        if hasattr(select, 'poll'):
-            self.old_poll = select.poll
-            select.poll = MockPoller
-            MockPoller.test_case = self
-
+        self.old_selector = telnetlib._TelnetSelector
+        telnetlib._TelnetSelector = MockSelector
     def tearDown(self):
-        if self.old_poll:
-            MockPoller.test_case = None
-            select.poll = self.old_poll
-        select.select = self.old_select
-
+        telnetlib._TelnetSelector = self.old_selector
 
 class ReadTests(ExpectAndReadTestCase):
     def test_read_until(self):
@@ -208,22 +184,6 @@
         data = telnet.read_until(b'match')
         self.assertEqual(data, expect)
 
-    def test_read_until_with_poll(self):
-        """Use select.poll() to implement telnet.read_until()."""
-        want = [b'x' * 10, b'match', b'y' * 10]
-        telnet = test_telnet(want, use_poll=True)
-        select.select = lambda *_: self.fail('unexpected select() call.')
-        data = telnet.read_until(b'match')
-        self.assertEqual(data, b''.join(want[:-1]))
-
-    def test_read_until_with_select(self):
-        """Use select.select() to implement telnet.read_until()."""
-        want = [b'x' * 10, b'match', b'y' * 10]
-        telnet = test_telnet(want, use_poll=False)
-        if self.old_poll:
-            select.poll = lambda *_: self.fail('unexpected poll() call.')
-        data = telnet.read_until(b'match')
-        self.assertEqual(data, b''.join(want[:-1]))
 
     def test_read_all(self):
         """
@@ -427,23 +387,6 @@
         (_,_,data) = telnet.expect([b'match'])
         self.assertEqual(data, b''.join(want[:-1]))
 
-    def test_expect_with_poll(self):
-        """Use select.poll() to implement telnet.expect()."""
-        want = [b'x' * 10, b'match', b'y' * 10]
-        telnet = test_telnet(want, use_poll=True)
-        select.select = lambda *_: self.fail('unexpected select() call.')
-        (_,_,data) = telnet.expect([b'match'])
-        self.assertEqual(data, b''.join(want[:-1]))
-
-    def test_expect_with_select(self):
-        """Use select.select() to implement telnet.expect()."""
-        want = [b'x' * 10, b'match', b'y' * 10]
-        telnet = test_telnet(want, use_poll=False)
-        if self.old_poll:
-            select.poll = lambda *_: self.fail('unexpected poll() call.')
-        (_,_,data) = telnet.expect([b'match'])
-        self.assertEqual(data, b''.join(want[:-1]))
-
 
 def test_main(verbose=None):
     support.run_unittest(GeneralTests, ReadTests, WriteTests, OptionTests,
diff --git a/Lib/test/test_zipfile.py b/Lib/test/test_zipfile.py
--- a/Lib/test/test_zipfile.py
+++ b/Lib/test/test_zipfile.py
@@ -591,6 +591,34 @@
             self.assertCompiledIn('email/__init__.py', names)
             self.assertCompiledIn('email/mime/text.py', names)
 
+    def test_write_filtered_python_package(self):
+        import test
+        packagedir = os.path.dirname(test.__file__)
+
+        with TemporaryFile() as t, zipfile.PyZipFile(t, "w") as zipfp:
+
+            # first make sure that the test folder gives error messages
+            # (on the badsyntax_... files)
+            with captured_stdout() as reportSIO:
+                zipfp.writepy(packagedir)
+            reportStr = reportSIO.getvalue()
+            self.assertTrue('SyntaxError' in reportStr)
+
+            # then check that the filter works on the whole package
+            with captured_stdout() as reportSIO:
+                zipfp.writepy(packagedir, filterfunc=lambda whatever: False)
+            reportStr = reportSIO.getvalue()
+            self.assertTrue('SyntaxError' not in reportStr)
+
+            # then check that the filter works on individual files
+            with captured_stdout() as reportSIO:
+                zipfp.writepy(packagedir, filterfunc=lambda fn:
+                                                     'bad' not in fn)
+            reportStr = reportSIO.getvalue()
+            if reportStr:
+                print(reportStr)
+            self.assertTrue('SyntaxError' not in reportStr)
+
     def test_write_with_optimization(self):
         import email
         packagedir = os.path.dirname(email.__file__)
@@ -600,7 +628,7 @@
         ext = '.pyo' if optlevel == 1 else '.pyc'
 
         with TemporaryFile() as t, \
-                 zipfile.PyZipFile(t, "w", optimize=optlevel) as zipfp:
+             zipfile.PyZipFile(t, "w", optimize=optlevel) as zipfp:
             zipfp.writepy(packagedir)
 
             names = zipfp.namelist()
@@ -630,6 +658,26 @@
         finally:
             shutil.rmtree(TESTFN2)
 
+    def test_write_python_directory_filtered(self):
+        os.mkdir(TESTFN2)
+        try:
+            with open(os.path.join(TESTFN2, "mod1.py"), "w") as fp:
+                fp.write("print(42)\n")
+
+            with open(os.path.join(TESTFN2, "mod2.py"), "w") as fp:
+                fp.write("print(42 * 42)\n")
+
+            with TemporaryFile() as t, zipfile.PyZipFile(t, "w") as zipfp:
+                zipfp.writepy(TESTFN2, filterfunc=lambda fn:
+                                                  not fn.endswith('mod2.py'))
+
+                names = zipfp.namelist()
+                self.assertCompiledIn('mod1.py', names)
+                self.assertNotIn('mod2.py', names)
+
+        finally:
+            shutil.rmtree(TESTFN2)
+
     def test_write_non_pyfile(self):
         with TemporaryFile() as t, zipfile.PyZipFile(t, "w") as zipfp:
             with open(TESTFN, 'w') as f:
@@ -733,25 +781,25 @@
     def test_extract_hackers_arcnames_windows_only(self):
         """Test combination of path fixing and windows name sanitization."""
         windows_hacknames = [
-                (r'..\foo\bar', 'foo/bar'),
-                (r'..\/foo\/bar', 'foo/bar'),
-                (r'foo/\..\/bar', 'foo/bar'),
-                (r'foo\/../\bar', 'foo/bar'),
-                (r'C:foo/bar', 'foo/bar'),
-                (r'C:/foo/bar', 'foo/bar'),
-                (r'C://foo/bar', 'foo/bar'),
-                (r'C:\foo\bar', 'foo/bar'),
-                (r'//conky/mountpoint/foo/bar', 'foo/bar'),
-                (r'\\conky\mountpoint\foo\bar', 'foo/bar'),
-                (r'///conky/mountpoint/foo/bar', 'conky/mountpoint/foo/bar'),
-                (r'\\\conky\mountpoint\foo\bar', 'conky/mountpoint/foo/bar'),
-                (r'//conky//mountpoint/foo/bar', 'conky/mountpoint/foo/bar'),
-                (r'\\conky\\mountpoint\foo\bar', 'conky/mountpoint/foo/bar'),
-                (r'//?/C:/foo/bar', 'foo/bar'),
-                (r'\\?\C:\foo\bar', 'foo/bar'),
-                (r'C:/../C:/foo/bar', 'C_/foo/bar'),
-                (r'a:b\c<d>e|f"g?h*i', 'b/c_d_e_f_g_h_i'),
-                ('../../foo../../ba..r', 'foo/ba..r'),
+            (r'..\foo\bar', 'foo/bar'),
+            (r'..\/foo\/bar', 'foo/bar'),
+            (r'foo/\..\/bar', 'foo/bar'),
+            (r'foo\/../\bar', 'foo/bar'),
+            (r'C:foo/bar', 'foo/bar'),
+            (r'C:/foo/bar', 'foo/bar'),
+            (r'C://foo/bar', 'foo/bar'),
+            (r'C:\foo\bar', 'foo/bar'),
+            (r'//conky/mountpoint/foo/bar', 'foo/bar'),
+            (r'\\conky\mountpoint\foo\bar', 'foo/bar'),
+            (r'///conky/mountpoint/foo/bar', 'conky/mountpoint/foo/bar'),
+            (r'\\\conky\mountpoint\foo\bar', 'conky/mountpoint/foo/bar'),
+            (r'//conky//mountpoint/foo/bar', 'conky/mountpoint/foo/bar'),
+            (r'\\conky\\mountpoint\foo\bar', 'conky/mountpoint/foo/bar'),
+            (r'//?/C:/foo/bar', 'foo/bar'),
+            (r'\\?\C:\foo\bar', 'foo/bar'),
+            (r'C:/../C:/foo/bar', 'C_/foo/bar'),
+            (r'a:b\c<d>e|f"g?h*i', 'b/c_d_e_f_g_h_i'),
+            ('../../foo../../ba..r', 'foo/ba..r'),
         ]
         self._test_extract_hackers_arcnames(windows_hacknames)
 
@@ -877,10 +925,10 @@
     def test_unsupported_version(self):
         # File has an extract_version of 120
         data = (b'PK\x03\x04x\x00\x00\x00\x00\x00!p\xa1@\x00\x00\x00\x00\x00\x00'
-        b'\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00xPK\x01\x02x\x03x\x00\x00\x00\x00'
-        b'\x00!p\xa1@\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00'
-        b'\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x01\x00\x00\x00\x00xPK\x05\x06'
-        b'\x00\x00\x00\x00\x01\x00\x01\x00/\x00\x00\x00\x1f\x00\x00\x00\x00\x00')
+                b'\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00xPK\x01\x02x\x03x\x00\x00\x00\x00'
+                b'\x00!p\xa1@\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00'
+                b'\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x01\x00\x00\x00\x00xPK\x05\x06'
+                b'\x00\x00\x00\x00\x01\x00\x01\x00/\x00\x00\x00\x1f\x00\x00\x00\x00\x00')
 
         self.assertRaises(NotImplementedError, zipfile.ZipFile,
                           io.BytesIO(data), 'r')
@@ -1066,11 +1114,11 @@
     def test_unsupported_compression(self):
         # data is declared as shrunk, but actually deflated
         data = (b'PK\x03\x04.\x00\x00\x00\x01\x00\xe4C\xa1@\x00\x00\x00'
-        b'\x00\x02\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00x\x03\x00PK\x01'
-        b'\x02.\x03.\x00\x00\x00\x01\x00\xe4C\xa1@\x00\x00\x00\x00\x02\x00\x00'
-        b'\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00'
-        b'\x80\x01\x00\x00\x00\x00xPK\x05\x06\x00\x00\x00\x00\x01\x00\x01\x00'
-        b'/\x00\x00\x00!\x00\x00\x00\x00\x00')
+                b'\x00\x02\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00x\x03\x00PK\x01'
+                b'\x02.\x03.\x00\x00\x00\x01\x00\xe4C\xa1@\x00\x00\x00\x00\x02\x00\x00'
+                b'\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00'
+                b'\x80\x01\x00\x00\x00\x00xPK\x05\x06\x00\x00\x00\x00\x01\x00\x01\x00'
+                b'/\x00\x00\x00!\x00\x00\x00\x00\x00')
         with zipfile.ZipFile(io.BytesIO(data), 'r') as zipf:
             self.assertRaises(NotImplementedError, zipf.open, 'x')
 
@@ -1232,57 +1280,57 @@
 class StoredBadCrcTests(AbstractBadCrcTests, unittest.TestCase):
     compression = zipfile.ZIP_STORED
     zip_with_bad_crc = (
-            b'PK\003\004\024\0\0\0\0\0 \213\212;:r'
-            b'\253\377\f\0\0\0\f\0\0\0\005\0\0\000af'
-            b'ilehello,AworldP'
-            b'K\001\002\024\003\024\0\0\0\0\0 \213\212;:'
-            b'r\253\377\f\0\0\0\f\0\0\0\005\0\0\0\0'
-            b'\0\0\0\0\0\0\0\200\001\0\0\0\000afi'
-            b'lePK\005\006\0\0\0\0\001\0\001\0003\000'
-            b'\0\0/\0\0\0\0\0')
+        b'PK\003\004\024\0\0\0\0\0 \213\212;:r'
+        b'\253\377\f\0\0\0\f\0\0\0\005\0\0\000af'
+        b'ilehello,AworldP'
+        b'K\001\002\024\003\024\0\0\0\0\0 \213\212;:'
+        b'r\253\377\f\0\0\0\f\0\0\0\005\0\0\0\0'
+        b'\0\0\0\0\0\0\0\200\001\0\0\0\000afi'
+        b'lePK\005\006\0\0\0\0\001\0\001\0003\000'
+        b'\0\0/\0\0\0\0\0')
 
 @requires_zlib
 class DeflateBadCrcTests(AbstractBadCrcTests, unittest.TestCase):
     compression = zipfile.ZIP_DEFLATED
     zip_with_bad_crc = (
-            b'PK\x03\x04\x14\x00\x00\x00\x08\x00n}\x0c=FA'
-            b'KE\x10\x00\x00\x00n\x00\x00\x00\x05\x00\x00\x00af'
-            b'ile\xcbH\xcd\xc9\xc9W(\xcf/\xcaI\xc9\xa0'
-            b'=\x13\x00PK\x01\x02\x14\x03\x14\x00\x00\x00\x08\x00n'
-            b'}\x0c=FAKE\x10\x00\x00\x00n\x00\x00\x00\x05'
-            b'\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x01\x00\x00\x00'
-            b'\x00afilePK\x05\x06\x00\x00\x00\x00\x01\x00'
-            b'\x01\x003\x00\x00\x003\x00\x00\x00\x00\x00')
+        b'PK\x03\x04\x14\x00\x00\x00\x08\x00n}\x0c=FA'
+        b'KE\x10\x00\x00\x00n\x00\x00\x00\x05\x00\x00\x00af'
+        b'ile\xcbH\xcd\xc9\xc9W(\xcf/\xcaI\xc9\xa0'
+        b'=\x13\x00PK\x01\x02\x14\x03\x14\x00\x00\x00\x08\x00n'
+        b'}\x0c=FAKE\x10\x00\x00\x00n\x00\x00\x00\x05'
+        b'\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x01\x00\x00\x00'
+        b'\x00afilePK\x05\x06\x00\x00\x00\x00\x01\x00'
+        b'\x01\x003\x00\x00\x003\x00\x00\x00\x00\x00')
 
 @requires_bz2
 class Bzip2BadCrcTests(AbstractBadCrcTests, unittest.TestCase):
     compression = zipfile.ZIP_BZIP2
     zip_with_bad_crc = (
-            b'PK\x03\x04\x14\x03\x00\x00\x0c\x00nu\x0c=FA'
-            b'KE8\x00\x00\x00n\x00\x00\x00\x05\x00\x00\x00af'
-            b'ileBZh91AY&SY\xd4\xa8\xca'
-            b'\x7f\x00\x00\x0f\x11\x80@\x00\x06D\x90\x80 \x00 \xa5'
-            b'P\xd9!\x03\x03\x13\x13\x13\x89\xa9\xa9\xc2u5:\x9f'
-            b'\x8b\xb9"\x9c(HjTe?\x80PK\x01\x02\x14'
-            b'\x03\x14\x03\x00\x00\x0c\x00nu\x0c=FAKE8'
-            b'\x00\x00\x00n\x00\x00\x00\x05\x00\x00\x00\x00\x00\x00\x00\x00'
-            b'\x00 \x80\x80\x81\x00\x00\x00\x00afilePK'
-            b'\x05\x06\x00\x00\x00\x00\x01\x00\x01\x003\x00\x00\x00[\x00'
-            b'\x00\x00\x00\x00')
+        b'PK\x03\x04\x14\x03\x00\x00\x0c\x00nu\x0c=FA'
+        b'KE8\x00\x00\x00n\x00\x00\x00\x05\x00\x00\x00af'
+        b'ileBZh91AY&SY\xd4\xa8\xca'
+        b'\x7f\x00\x00\x0f\x11\x80@\x00\x06D\x90\x80 \x00 \xa5'
+        b'P\xd9!\x03\x03\x13\x13\x13\x89\xa9\xa9\xc2u5:\x9f'
+        b'\x8b\xb9"\x9c(HjTe?\x80PK\x01\x02\x14'
+        b'\x03\x14\x03\x00\x00\x0c\x00nu\x0c=FAKE8'
+        b'\x00\x00\x00n\x00\x00\x00\x05\x00\x00\x00\x00\x00\x00\x00\x00'
+        b'\x00 \x80\x80\x81\x00\x00\x00\x00afilePK'
+        b'\x05\x06\x00\x00\x00\x00\x01\x00\x01\x003\x00\x00\x00[\x00'
+        b'\x00\x00\x00\x00')
 
 @requires_lzma
 class LzmaBadCrcTests(AbstractBadCrcTests, unittest.TestCase):
     compression = zipfile.ZIP_LZMA
     zip_with_bad_crc = (
-            b'PK\x03\x04\x14\x03\x00\x00\x0e\x00nu\x0c=FA'
-            b'KE\x1b\x00\x00\x00n\x00\x00\x00\x05\x00\x00\x00af'
-            b'ile\t\x04\x05\x00]\x00\x00\x00\x04\x004\x19I'
-            b'\xee\x8d\xe9\x17\x89:3`\tq!.8\x00PK'
-            b'\x01\x02\x14\x03\x14\x03\x00\x00\x0e\x00nu\x0c=FA'
-            b'KE\x1b\x00\x00\x00n\x00\x00\x00\x05\x00\x00\x00\x00\x00'
-            b'\x00\x00\x00\x00 \x80\x80\x81\x00\x00\x00\x00afil'
-            b'ePK\x05\x06\x00\x00\x00\x00\x01\x00\x01\x003\x00\x00'
-            b'\x00>\x00\x00\x00\x00\x00')
+        b'PK\x03\x04\x14\x03\x00\x00\x0e\x00nu\x0c=FA'
+        b'KE\x1b\x00\x00\x00n\x00\x00\x00\x05\x00\x00\x00af'
+        b'ile\t\x04\x05\x00]\x00\x00\x00\x04\x004\x19I'
+        b'\xee\x8d\xe9\x17\x89:3`\tq!.8\x00PK'
+        b'\x01\x02\x14\x03\x14\x03\x00\x00\x0e\x00nu\x0c=FA'
+        b'KE\x1b\x00\x00\x00n\x00\x00\x00\x05\x00\x00\x00\x00\x00'
+        b'\x00\x00\x00\x00 \x80\x80\x81\x00\x00\x00\x00afil'
+        b'ePK\x05\x06\x00\x00\x00\x00\x01\x00\x01\x003\x00\x00'
+        b'\x00>\x00\x00\x00\x00\x00')
 
 
 class DecryptionTests(unittest.TestCase):
@@ -1291,22 +1339,22 @@
     ZIP file."""
 
     data = (
-    b'PK\x03\x04\x14\x00\x01\x00\x00\x00n\x92i.#y\xef?&\x00\x00\x00\x1a\x00'
-    b'\x00\x00\x08\x00\x00\x00test.txt\xfa\x10\xa0gly|\xfa-\xc5\xc0=\xf9y'
-    b'\x18\xe0\xa8r\xb3Z}Lg\xbc\xae\xf9|\x9b\x19\xe4\x8b\xba\xbb)\x8c\xb0\xdbl'
-    b'PK\x01\x02\x14\x00\x14\x00\x01\x00\x00\x00n\x92i.#y\xef?&\x00\x00\x00'
-    b'\x1a\x00\x00\x00\x08\x00\x00\x00\x00\x00\x00\x00\x01\x00 \x00\xb6\x81'
-    b'\x00\x00\x00\x00test.txtPK\x05\x06\x00\x00\x00\x00\x01\x00\x01\x006\x00'
-    b'\x00\x00L\x00\x00\x00\x00\x00' )
+        b'PK\x03\x04\x14\x00\x01\x00\x00\x00n\x92i.#y\xef?&\x00\x00\x00\x1a\x00'
+        b'\x00\x00\x08\x00\x00\x00test.txt\xfa\x10\xa0gly|\xfa-\xc5\xc0=\xf9y'
+        b'\x18\xe0\xa8r\xb3Z}Lg\xbc\xae\xf9|\x9b\x19\xe4\x8b\xba\xbb)\x8c\xb0\xdbl'
+        b'PK\x01\x02\x14\x00\x14\x00\x01\x00\x00\x00n\x92i.#y\xef?&\x00\x00\x00'
+        b'\x1a\x00\x00\x00\x08\x00\x00\x00\x00\x00\x00\x00\x01\x00 \x00\xb6\x81'
+        b'\x00\x00\x00\x00test.txtPK\x05\x06\x00\x00\x00\x00\x01\x00\x01\x006\x00'
+        b'\x00\x00L\x00\x00\x00\x00\x00' )
     data2 = (
-    b'PK\x03\x04\x14\x00\t\x00\x08\x00\xcf}38xu\xaa\xb2\x14\x00\x00\x00\x00\x02'
-    b'\x00\x00\x04\x00\x15\x00zeroUT\t\x00\x03\xd6\x8b\x92G\xda\x8b\x92GUx\x04'
-    b'\x00\xe8\x03\xe8\x03\xc7<M\xb5a\xceX\xa3Y&\x8b{oE\xd7\x9d\x8c\x98\x02\xc0'
-    b'PK\x07\x08xu\xaa\xb2\x14\x00\x00\x00\x00\x02\x00\x00PK\x01\x02\x17\x03'
-    b'\x14\x00\t\x00\x08\x00\xcf}38xu\xaa\xb2\x14\x00\x00\x00\x00\x02\x00\x00'
-    b'\x04\x00\r\x00\x00\x00\x00\x00\x00\x00\x00\x00\xa4\x81\x00\x00\x00\x00ze'
-    b'roUT\x05\x00\x03\xd6\x8b\x92GUx\x00\x00PK\x05\x06\x00\x00\x00\x00\x01'
-    b'\x00\x01\x00?\x00\x00\x00[\x00\x00\x00\x00\x00' )
+        b'PK\x03\x04\x14\x00\t\x00\x08\x00\xcf}38xu\xaa\xb2\x14\x00\x00\x00\x00\x02'
+        b'\x00\x00\x04\x00\x15\x00zeroUT\t\x00\x03\xd6\x8b\x92G\xda\x8b\x92GUx\x04'
+        b'\x00\xe8\x03\xe8\x03\xc7<M\xb5a\xceX\xa3Y&\x8b{oE\xd7\x9d\x8c\x98\x02\xc0'
+        b'PK\x07\x08xu\xaa\xb2\x14\x00\x00\x00\x00\x02\x00\x00PK\x01\x02\x17\x03'
+        b'\x14\x00\t\x00\x08\x00\xcf}38xu\xaa\xb2\x14\x00\x00\x00\x00\x02\x00\x00'
+        b'\x04\x00\r\x00\x00\x00\x00\x00\x00\x00\x00\x00\xa4\x81\x00\x00\x00\x00ze'
+        b'roUT\x05\x00\x03\xd6\x8b\x92GUx\x00\x00PK\x05\x06\x00\x00\x00\x00\x01'
+        b'\x00\x01\x00?\x00\x00\x00[\x00\x00\x00\x00\x00' )
 
     plain = b'zipfile.py encryption test'
     plain2 = b'\x00'*512
diff --git a/Lib/zipfile.py b/Lib/zipfile.py
--- a/Lib/zipfile.py
+++ b/Lib/zipfile.py
@@ -211,8 +211,8 @@
     if len(data) != sizeEndCentDir64:
         return endrec
     sig, sz, create_version, read_version, disk_num, disk_dir, \
-            dircount, dircount2, dirsize, diroffset = \
-            struct.unpack(structEndArchive64, data)
+        dircount, dircount2, dirsize, diroffset = \
+        struct.unpack(structEndArchive64, data)
     if sig != stringEndArchive64:
         return endrec
 
@@ -292,26 +292,26 @@
     """Class with attributes describing each file in the ZIP archive."""
 
     __slots__ = (
-            'orig_filename',
-            'filename',
-            'date_time',
-            'compress_type',
-            'comment',
-            'extra',
-            'create_system',
-            'create_version',
-            'extract_version',
-            'reserved',
-            'flag_bits',
-            'volume',
-            'internal_attr',
-            'external_attr',
-            'header_offset',
-            'CRC',
-            'compress_size',
-            'file_size',
-            '_raw_time',
-        )
+        'orig_filename',
+        'filename',
+        'date_time',
+        'compress_type',
+        'comment',
+        'extra',
+        'create_system',
+        'create_version',
+        'extract_version',
+        'reserved',
+        'flag_bits',
+        'volume',
+        'internal_attr',
+        'external_attr',
+        'header_offset',
+        'CRC',
+        'compress_size',
+        'file_size',
+        '_raw_time',
+    )
 
     def __init__(self, filename="NoName", date_time=(1980,1,1,0,0,0)):
         self.orig_filename = filename   # Original file name in archive
@@ -376,7 +376,7 @@
         if zip64:
             fmt = '<HHQQ'
             extra = extra + struct.pack(fmt,
-                    1, struct.calcsize(fmt)-4, file_size, compress_size)
+                                        1, struct.calcsize(fmt)-4, file_size, compress_size)
         if file_size > ZIP64_LIMIT or compress_size > ZIP64_LIMIT:
             if not zip64:
                 raise LargeZipFile("Filesize would require ZIP64 extensions")
@@ -395,10 +395,10 @@
         self.create_version = max(min_version, self.create_version)
         filename, flag_bits = self._encodeFilenameFlags()
         header = struct.pack(structFileHeader, stringFileHeader,
-                 self.extract_version, self.reserved, flag_bits,
-                 self.compress_type, dostime, dosdate, CRC,
-                 compress_size, file_size,
-                 len(filename), len(extra))
+                             self.extract_version, self.reserved, flag_bits,
+                             self.compress_type, dostime, dosdate, CRC,
+                             compress_size, file_size,
+                             len(filename), len(extra))
         return header + filename + extra
 
     def _encodeFilenameFlags(self):
@@ -511,7 +511,7 @@
     def _init(self):
         props = lzma._encode_filter_properties({'id': lzma.FILTER_LZMA1})
         self._comp = lzma.LZMACompressor(lzma.FORMAT_RAW, filters=[
-                lzma._decode_filter_properties(lzma.FILTER_LZMA1, props)
+            lzma._decode_filter_properties(lzma.FILTER_LZMA1, props)
         ])
         return struct.pack('<BBH', 9, 4, len(props)) + props
 
@@ -543,8 +543,8 @@
                 return b''
 
             self._decomp = lzma.LZMADecompressor(lzma.FORMAT_RAW, filters=[
-                    lzma._decode_filter_properties(lzma.FILTER_LZMA1,
-                            self._unconsumed[4:4 + psize])
+                lzma._decode_filter_properties(lzma.FILTER_LZMA1,
+                                               self._unconsumed[4:4 + psize])
             ])
             data = self._unconsumed[4 + psize:]
             del self._unconsumed
@@ -580,15 +580,15 @@
     elif compression == ZIP_DEFLATED:
         if not zlib:
             raise RuntimeError(
-                    "Compression requires the (missing) zlib module")
+                "Compression requires the (missing) zlib module")
     elif compression == ZIP_BZIP2:
         if not bz2:
             raise RuntimeError(
-                    "Compression requires the (missing) bz2 module")
+                "Compression requires the (missing) bz2 module")
     elif compression == ZIP_LZMA:
         if not lzma:
             raise RuntimeError(
-                    "Compression requires the (missing) lzma module")
+                "Compression requires the (missing) lzma module")
     else:
         raise RuntimeError("That compression method is not supported")
 
@@ -596,7 +596,7 @@
 def _get_compressor(compress_type):
     if compress_type == ZIP_DEFLATED:
         return zlib.compressobj(zlib.Z_DEFAULT_COMPRESSION,
-             zlib.DEFLATED, -15)
+                                zlib.DEFLATED, -15)
     elif compress_type == ZIP_BZIP2:
         return bz2.BZ2Compressor()
     elif compress_type == ZIP_LZMA:
@@ -836,8 +836,8 @@
             n = max(n, self.MIN_READ_SIZE)
             data = self._decompressor.decompress(data, n)
             self._eof = (self._decompressor.eof or
-                    self._compress_left <= 0 and
-                    not self._decompressor.unconsumed_tail)
+                         self._compress_left <= 0 and
+                         not self._decompressor.unconsumed_tail)
             if self._eof:
                 data += self._decompressor.flush()
         else:
@@ -1016,8 +1016,8 @@
             x.comment = fp.read(centdir[_CD_COMMENT_LENGTH])
             x.header_offset = centdir[_CD_LOCAL_HEADER_OFFSET]
             (x.create_version, x.create_system, x.extract_version, x.reserved,
-                x.flag_bits, x.compress_type, t, d,
-                x.CRC, x.compress_size, x.file_size) = centdir[1:12]
+             x.flag_bits, x.compress_type, t, d,
+             x.CRC, x.compress_size, x.file_size) = centdir[1:12]
             if x.extract_version > MAX_EXTRACT_VERSION:
                 raise NotImplementedError("zip file version %.1f" %
                                           (x.extract_version / 10))
@@ -1025,7 +1025,7 @@
             # Convert date/time code to (year, month, day, hour, min, sec)
             x._raw_time = t
             x.date_time = ( (d>>9)+1980, (d>>5)&0xF, d&0x1F,
-                                     t>>11, (t>>5)&0x3F, (t&0x1F) * 2 )
+                            t>>11, (t>>5)&0x3F, (t&0x1F) * 2 )
 
             x._decodeExtra()
             x.header_offset = x.header_offset + concat
@@ -1103,7 +1103,7 @@
         if len(comment) >= ZIP_MAX_COMMENT:
             if self.debug:
                 print('Archive comment is too long; truncating to %d bytes'
-                        % ZIP_MAX_COMMENT)
+                      % ZIP_MAX_COMMENT)
             comment = comment[:ZIP_MAX_COMMENT]
         self._comment = comment
         self._didModify = True
@@ -1121,7 +1121,7 @@
             raise TypeError("pwd: expected bytes, got %s" % type(pwd))
         if not self.fp:
             raise RuntimeError(
-                  "Attempt to read ZIP archive that was already closed")
+                "Attempt to read ZIP archive that was already closed")
 
         # Only open a new file for instances where we were not
         # given a file object in the constructor
@@ -1294,7 +1294,7 @@
             raise RuntimeError('write() requires mode "w" or "a"')
         if not self.fp:
             raise RuntimeError(
-                  "Attempt to write ZIP archive that was already closed")
+                "Attempt to write ZIP archive that was already closed")
         _check_compression(zinfo.compress_type)
         if zinfo.file_size > ZIP64_LIMIT:
             if not self._allowZip64:
@@ -1302,14 +1302,14 @@
         if zinfo.header_offset > ZIP64_LIMIT:
             if not self._allowZip64:
                 raise LargeZipFile(
-                      "Zipfile size would require ZIP64 extensions")
+                    "Zipfile size would require ZIP64 extensions")
 
     def write(self, filename, arcname=None, compress_type=None):
         """Put the bytes from filename into the archive under the name
         arcname."""
         if not self.fp:
             raise RuntimeError(
-                  "Attempt to write to ZIP archive that was already closed")
+                "Attempt to write to ZIP archive that was already closed")
 
         st = os.stat(filename)
         isdir = stat.S_ISDIR(st.st_mode)
@@ -1356,7 +1356,7 @@
             zinfo.compress_size = compress_size = 0
             # Compressed size can be larger than uncompressed size
             zip64 = self._allowZip64 and \
-                    zinfo.file_size * 1.05 > ZIP64_LIMIT
+                zinfo.file_size * 1.05 > ZIP64_LIMIT
             self.fp.write(zinfo.FileHeader(zip64))
             file_size = 0
             while 1:
@@ -1410,7 +1410,7 @@
 
         if not self.fp:
             raise RuntimeError(
-                  "Attempt to write to ZIP archive that was already closed")
+                "Attempt to write to ZIP archive that was already closed")
 
         zinfo.file_size = len(data)            # Uncompressed size
         zinfo.header_offset = self.fp.tell()    # Start of header data
@@ -1430,7 +1430,7 @@
         else:
             zinfo.compress_size = zinfo.file_size
         zip64 = zinfo.file_size > ZIP64_LIMIT or \
-                zinfo.compress_size > ZIP64_LIMIT
+            zinfo.compress_size > ZIP64_LIMIT
         if zip64 and not self._allowZip64:
             raise LargeZipFile("Filesize would require ZIP64 extensions")
         self.fp.write(zinfo.FileHeader(zip64))
@@ -1439,7 +1439,7 @@
             # Write CRC and file sizes after the file data
             fmt = '<LQQ' if zip64 else '<LLL'
             self.fp.write(struct.pack(fmt, zinfo.CRC, zinfo.compress_size,
-                  zinfo.file_size))
+                                      zinfo.file_size))
         self.fp.flush()
         self.filelist.append(zinfo)
         self.NameToInfo[zinfo.filename] = zinfo
@@ -1465,7 +1465,7 @@
                     dostime = dt[3] << 11 | dt[4] << 5 | (dt[5] // 2)
                     extra = []
                     if zinfo.file_size > ZIP64_LIMIT \
-                            or zinfo.compress_size > ZIP64_LIMIT:
+                       or zinfo.compress_size > ZIP64_LIMIT:
                         extra.append(zinfo.file_size)
                         extra.append(zinfo.compress_size)
                         file_size = 0xffffffff
@@ -1485,8 +1485,8 @@
                     if extra:
                         # Append a ZIP64 field to the extra's
                         extra_data = struct.pack(
-                                '<HH' + 'Q'*len(extra),
-                                1, 8*len(extra), *extra) + extra_data
+                            '<HH' + 'Q'*len(extra),
+                            1, 8*len(extra), *extra) + extra_data
 
                         min_version = ZIP64_VERSION
 
@@ -1500,21 +1500,21 @@
                     try:
                         filename, flag_bits = zinfo._encodeFilenameFlags()
                         centdir = struct.pack(structCentralDir,
-                            stringCentralDir, create_version,
-                            zinfo.create_system, extract_version, zinfo.reserved,
-                            flag_bits, zinfo.compress_type, dostime, dosdate,
-                            zinfo.CRC, compress_size, file_size,
-                            len(filename), len(extra_data), len(zinfo.comment),
-                            0, zinfo.internal_attr, zinfo.external_attr,
-                            header_offset)
+                                              stringCentralDir, create_version,
+                                              zinfo.create_system, extract_version, zinfo.reserved,
+                                              flag_bits, zinfo.compress_type, dostime, dosdate,
+                                              zinfo.CRC, compress_size, file_size,
+                                              len(filename), len(extra_data), len(zinfo.comment),
+                                              0, zinfo.internal_attr, zinfo.external_attr,
+                                              header_offset)
                     except DeprecationWarning:
                         print((structCentralDir, stringCentralDir, create_version,
-                            zinfo.create_system, extract_version, zinfo.reserved,
-                            zinfo.flag_bits, zinfo.compress_type, dostime, dosdate,
-                            zinfo.CRC, compress_size, file_size,
-                            len(zinfo.filename), len(extra_data), len(zinfo.comment),
-                            0, zinfo.internal_attr, zinfo.external_attr,
-                            header_offset), file=sys.stderr)
+                               zinfo.create_system, extract_version, zinfo.reserved,
+                               zinfo.flag_bits, zinfo.compress_type, dostime, dosdate,
+                               zinfo.CRC, compress_size, file_size,
+                               len(zinfo.filename), len(extra_data), len(zinfo.comment),
+                               0, zinfo.internal_attr, zinfo.external_attr,
+                               header_offset), file=sys.stderr)
                         raise
                     self.fp.write(centdir)
                     self.fp.write(filename)
@@ -1531,22 +1531,22 @@
                     centDirSize > ZIP64_LIMIT):
                     # Need to write the ZIP64 end-of-archive records
                     zip64endrec = struct.pack(
-                            structEndArchive64, stringEndArchive64,
-                            44, 45, 45, 0, 0, centDirCount, centDirCount,
-                            centDirSize, centDirOffset)
+                        structEndArchive64, stringEndArchive64,
+                        44, 45, 45, 0, 0, centDirCount, centDirCount,
+                        centDirSize, centDirOffset)
                     self.fp.write(zip64endrec)
 
                     zip64locrec = struct.pack(
-                            structEndArchive64Locator,
-                            stringEndArchive64Locator, 0, pos2, 1)
+                        structEndArchive64Locator,
+                        stringEndArchive64Locator, 0, pos2, 1)
                     self.fp.write(zip64locrec)
                     centDirCount = min(centDirCount, 0xFFFF)
                     centDirSize = min(centDirSize, 0xFFFFFFFF)
                     centDirOffset = min(centDirOffset, 0xFFFFFFFF)
 
                 endrec = struct.pack(structEndArchive, stringEndArchive,
-                                    0, 0, centDirCount, centDirCount,
-                                    centDirSize, centDirOffset, len(self._comment))
+                                     0, 0, centDirCount, centDirCount,
+                                     centDirSize, centDirOffset, len(self._comment))
                 self.fp.write(endrec)
                 self.fp.write(self._comment)
                 self.fp.flush()
@@ -1566,7 +1566,7 @@
                          allowZip64=allowZip64)
         self._optimize = optimize
 
-    def writepy(self, pathname, basename=""):
+    def writepy(self, pathname, basename="", filterfunc=None):
         """Add all files from "pathname" to the ZIP archive.
 
         If pathname is a package directory, search the directory and
@@ -1577,7 +1577,14 @@
         archive.  Added modules are always module.pyo or module.pyc.
         This method will compile the module.py into module.pyc if
         necessary.
+        If filterfunc(pathname) is given, it is called with every argument.
+        When it is False, the file or directory is skipped.
         """
+        if filterfunc and not filterfunc(pathname):
+            if self.debug:
+                label = 'path' if os.path.isdir(pathname) else 'file'
+                print('%s "%s" skipped by filterfunc' % (label, pathname))
+            return
         dir, name = os.path.split(pathname)
         if os.path.isdir(pathname):
             initname = os.path.join(pathname, "__init__.py")
@@ -1602,10 +1609,15 @@
                     if os.path.isdir(path):
                         if os.path.isfile(os.path.join(path, "__init__.py")):
                             # This is a package directory, add it
-                            self.writepy(path, basename)  # Recursive call
+                            self.writepy(path, basename,
+                                         filterfunc=filterfunc)  # Recursive call
                     elif ext == ".py":
+                        if filterfunc and not filterfunc(path):
+                            if self.debug:
+                                print('file "%s" skipped by filterfunc' % path)
+                            continue
                         fname, arcname = self._get_codename(path[0:-3],
-                                         basename)
+                                                            basename)
                         if self.debug:
                             print("Adding", arcname)
                         self.write(fname, arcname)
@@ -1617,15 +1629,19 @@
                     path = os.path.join(pathname, filename)
                     root, ext = os.path.splitext(filename)
                     if ext == ".py":
+                        if filterfunc and not filterfunc(path):
+                            if self.debug:
+                                print('file "%s" skipped by filterfunc' % path)
+                            continue
                         fname, arcname = self._get_codename(path[0:-3],
-                                         basename)
+                                                            basename)
                         if self.debug:
                             print("Adding", arcname)
                         self.write(fname, arcname)
         else:
             if pathname[-3:] != ".py":
                 raise RuntimeError(
-                      'Files added with writepy() must end with ".py"')
+                    'Files added with writepy() must end with ".py"')
             fname, arcname = self._get_codename(pathname[0:-3], basename)
             if self.debug:
                 print("Adding file", arcname)
@@ -1764,7 +1780,7 @@
             elif os.path.isdir(path):
                 for nm in os.listdir(path):
                     addToZip(zf,
-                            os.path.join(path, nm), os.path.join(zippath, nm))
+                             os.path.join(path, nm), os.path.join(zippath, nm))
             # else: ignore
 
         with ZipFile(args[1], 'w', allowZip64=True) as zf:
diff --git a/Misc/ACKS b/Misc/ACKS
--- a/Misc/ACKS
+++ b/Misc/ACKS
@@ -818,6 +818,7 @@
 Simon Mathieu
 Laura Matson
 Graham Matthews
+Martin Matusiak
 Dieter Maurer
 Daniel May
 Madison May
diff --git a/Misc/NEWS b/Misc/NEWS
--- a/Misc/NEWS
+++ b/Misc/NEWS
@@ -3,19 +3,52 @@
 +++++++++++
 
 What's New in Python 3.4.0 Beta 1?
-================================
+==================================
 
 Projected release date: 2013-11-24
 
 Core and Builtins
 -----------------
 
+- Issue #18603: Ensure that PyOS_mystricmp and PyOS_mystrnicmp are in the
+  Python executable and not removed by the linker's optimizer.
+
+- Issue #19306: Add extra hints to the faulthandler module's stack
+  dumps that these are "upside down".
+
 Library
 -------
 
+- Issue #16595: Add prlimit() to resource module.
+
+- Issue #19324: Expose Linux-specific constants in resource module.
+
+- Issue #17400: ipaddress should make it easy to identify rfc6598 addresses.
+
+- Load SSL's error strings in hashlib.
+
+- Issue #18527: Upgrade internal copy of zlib to 1.2.8.
+
+- Issue #19274: Add a filterfunc parameter to PyZipFile.writepy.
+
+- Issue #8964: fix platform._sys_version to handle IronPython 2.6+.
+  Patch by Martin Matusiak.
+
+- Issue #18958: Improve error message for json.load(s) while passing a string
+  that starts with a UTF-8 BOM.
+
+- Issue #19307: Improve error message for json.load(s) while passing objects
+  of the wrong type.
+
+- Issue #16038: CVE-2013-1752: ftplib: Limit amount of data read by
+  limiting the call to readline().  Original patch by Michał
+  Jastrzębski and Giampaolo Rodola.
+
+- Issue #17087: Improved the repr for regular expression match objects.
+
 
 What's New in Python 3.4.0 Alpha 4?
-================================
+===================================
 
 Release date: 2013-10-20
 
@@ -25,7 +58,7 @@
 - Issue #19301: Give classes and functions that are explicitly marked global a
   global qualname.
 
-- Issue #19279: UTF-7 decoder no more produces illegal strings.
+- Issue #19279: UTF-7 decoder no longer produces illegal strings.
 
 - Issue #16612: Add "Argument Clinic", a compile-time preprocessor for
   C files to generate argument parsing code.  (See PEP 436.)
diff --git a/Modules/_hashopenssl.c b/Modules/_hashopenssl.c
--- a/Modules/_hashopenssl.c
+++ b/Modules/_hashopenssl.c
@@ -513,10 +513,11 @@
  * Also OpenSSL < 1.0 don't provide PKCS5_PBKDF2_HMAC(), only
  * PKCS5_PBKDF2_SHA1.
  */
-int PKCS5_PBKDF2_HMAC_fast(const char *pass, int passlen,
-                           const unsigned char *salt, int saltlen,
-                           int iter, const EVP_MD *digest,
-                           int keylen, unsigned char *out)
+static int
+PKCS5_PBKDF2_HMAC_fast(const char *pass, int passlen,
+                       const unsigned char *salt, int saltlen,
+                       int iter, const EVP_MD *digest,
+                       int keylen, unsigned char *out)
 {
     unsigned char digtmp[EVP_MAX_MD_SIZE], *p, itmp[4];
     int cplen, j, k, tkeylen, mdlen;
@@ -846,6 +847,7 @@
     PyObject *m, *openssl_md_meth_names;
 
     OpenSSL_add_all_digests();
+    ERR_load_crypto_strings();
 
     /* TODO build EVP_functions openssl_* entries dynamically based
      * on what hashes are supported rather than listing many
@@ -870,10 +872,8 @@
         return NULL;
     }
 
-#if HASH_OBJ_CONSTRUCTOR
-    Py_INCREF(&EVPtype);
+    Py_INCREF((PyObject *)&EVPtype);
     PyModule_AddObject(m, "HASH", (PyObject *)&EVPtype);
-#endif
 
     /* these constants are used by the convenience constructors */
     INIT_CONSTRUCTOR_CONSTANTS(md5);
diff --git a/Modules/_sha3/sha3module.c b/Modules/_sha3/sha3module.c
--- a/Modules/_sha3/sha3module.c
+++ b/Modules/_sha3/sha3module.c
@@ -576,10 +576,18 @@
 PyMODINIT_FUNC
 PyInit__sha3(void)
 {
+    PyObject *m;
+
     Py_TYPE(&SHA3type) = &PyType_Type;
     if (PyType_Ready(&SHA3type) < 0) {
         return NULL;
     }
 
-    return PyModule_Create(&_SHA3module);
+    m = PyModule_Create(&_SHA3module);
+    if (m == NULL)
+        return NULL;
+
+    Py_INCREF((PyObject *)&SHA3type);
+    PyModule_AddObject(m, "SHA3Type", (PyObject *)&SHA3type);
+    return m;
 }
diff --git a/Modules/_sre.c b/Modules/_sre.c
--- a/Modules/_sre.c
+++ b/Modules/_sre.c
@@ -3637,6 +3637,22 @@
         return match_regs(self);
 }
 
+static PyObject *
+match_repr(MatchObject *self)
+{
+    PyObject *result;
+    PyObject *group0 = match_getslice_by_index(self, 0, Py_None);
+    if (group0 == NULL)
+        return NULL;
+    result = PyUnicode_FromFormat(
+            "<%s object; span=(%d, %d), match=%.50R>",
+            Py_TYPE(self)->tp_name,
+            self->mark[0], self->mark[1], group0);
+    Py_DECREF(group0);
+    return result;
+}
+
+
 static PyGetSetDef match_getset[] = {
     {"lastindex", (getter)match_lastindex_get, (setter)NULL},
     {"lastgroup", (getter)match_lastgroup_get, (setter)NULL},
@@ -3665,7 +3681,7 @@
     0,                          /* tp_getattr */
     0,                          /* tp_setattr */
     0,                          /* tp_reserved */
-    0,                          /* tp_repr */
+    (reprfunc)match_repr,       /* tp_repr */
     0,                          /* tp_as_number */
     0,                          /* tp_as_sequence */
     0,                          /* tp_as_mapping */
diff --git a/Modules/md5module.c b/Modules/md5module.c
--- a/Modules/md5module.c
+++ b/Modules/md5module.c
@@ -572,8 +572,17 @@
 PyMODINIT_FUNC
 PyInit__md5(void)
 {
+    PyObject *m;
+
     Py_TYPE(&MD5type) = &PyType_Type;
     if (PyType_Ready(&MD5type) < 0)
         return NULL;
-    return PyModule_Create(&_md5module);
+
+    m = PyModule_Create(&_md5module);
+    if (m == NULL)
+        return NULL;
+
+    Py_INCREF((PyObject *)&MD5type);
+    PyModule_AddObject(m, "MD5Type", (PyObject *)&MD5type);
+    return m;
 }
diff --git a/Modules/resource.c b/Modules/resource.c
--- a/Modules/resource.c
+++ b/Modules/resource.c
@@ -106,6 +106,44 @@
     return result;
 }
 
+static int
+py2rlimit(PyObject *curobj, PyObject *maxobj, struct rlimit *rl_out)
+{
+#if !defined(HAVE_LARGEFILE_SUPPORT)
+    rl_out->rlim_cur = PyLong_AsLong(curobj);
+    if (rl_out->rlim_cur == (rlim_t)-1 && PyErr_Occurred())
+        return -1;
+    rl_out->rlim_max = PyLong_AsLong(maxobj);
+    if (rl_out->rlim_max == (rlim_t)-1 && PyErr_Occurred())
+        return -1;
+#else
+    /* The limits are probably bigger than a long */
+    rl_out->rlim_cur = PyLong_AsLongLong(curobj);
+    if (rl_out->rlim_cur == (rlim_t)-1 && PyErr_Occurred())
+        return -1;
+    rl_out->rlim_max = PyLong_AsLongLong(maxobj);
+    if (rl_out->rlim_max == (rlim_t)-1 && PyErr_Occurred())
+        return -1;
+#endif
+
+    rl_out->rlim_cur = rl_out->rlim_cur & RLIM_INFINITY;
+    rl_out->rlim_max = rl_out->rlim_max & RLIM_INFINITY;
+    return 0;
+
+}
+
+static PyObject*
+rlimit2py(struct rlimit rl)
+{
+#if defined(HAVE_LONG_LONG)
+    if (sizeof(rl.rlim_cur) > sizeof(long)) {
+        return Py_BuildValue("LL",
+                             (PY_LONG_LONG) rl.rlim_cur,
+                             (PY_LONG_LONG) rl.rlim_max);
+    }
+#endif
+    return Py_BuildValue("ll", (long) rl.rlim_cur, (long) rl.rlim_max);
+}
 
 static PyObject *
 resource_getrlimit(PyObject *self, PyObject *args)
@@ -126,15 +164,7 @@
         PyErr_SetFromErrno(PyExc_OSError);
         return NULL;
     }
-
-#if defined(HAVE_LONG_LONG)
-    if (sizeof(rl.rlim_cur) > sizeof(long)) {
-        return Py_BuildValue("LL",
-                             (PY_LONG_LONG) rl.rlim_cur,
-                             (PY_LONG_LONG) rl.rlim_max);
-    }
-#endif
-    return Py_BuildValue("ll", (long) rl.rlim_cur, (long) rl.rlim_max);
+    return rlimit2py(rl);
 }
 
 static PyObject *
@@ -166,25 +196,10 @@
     curobj = PyTuple_GET_ITEM(limits, 0);
     maxobj = PyTuple_GET_ITEM(limits, 1);
 
-#if !defined(HAVE_LARGEFILE_SUPPORT)
-    rl.rlim_cur = PyLong_AsLong(curobj);
-    if (rl.rlim_cur == (rlim_t)-1 && PyErr_Occurred())
+    if (py2rlimit(curobj, maxobj, &rl) < 0) {
         goto error;
-    rl.rlim_max = PyLong_AsLong(maxobj);
-    if (rl.rlim_max == (rlim_t)-1 && PyErr_Occurred())
-        goto error;
-#else
-    /* The limits are probably bigger than a long */
-    rl.rlim_cur = PyLong_AsLongLong(curobj);
-    if (rl.rlim_cur == (rlim_t)-1 && PyErr_Occurred())
-        goto error;
-    rl.rlim_max = PyLong_AsLongLong(maxobj);
-    if (rl.rlim_max == (rlim_t)-1 && PyErr_Occurred())
-        goto error;
-#endif
+    }
 
-    rl.rlim_cur = rl.rlim_cur & RLIM_INFINITY;
-    rl.rlim_max = rl.rlim_max & RLIM_INFINITY;
     if (setrlimit(resource, &rl) == -1) {
         if (errno == EINVAL)
             PyErr_SetString(PyExc_ValueError,
@@ -205,6 +220,48 @@
     return NULL;
 }
 
+#ifdef HAVE_PRLIMIT
+static PyObject *
+resource_prlimit(PyObject *self, PyObject *args)
+{
+    struct rlimit old_limit, new_limit;
+    int resource, retval;
+    pid_t pid;
+    PyObject *curobj=NULL, *maxobj=NULL;
+
+    if (!PyArg_ParseTuple(args, _Py_PARSE_PID "i|(OO):prlimit",
+                          &pid, &resource, &curobj, &maxobj))
+        return NULL;
+
+    if (resource < 0 || resource >= RLIM_NLIMITS) {
+        PyErr_SetString(PyExc_ValueError,
+                        "invalid resource specified");
+        return NULL;
+    }
+
+    if (curobj != NULL) {
+        if (py2rlimit(curobj, maxobj, &new_limit) < 0) {
+            return NULL;
+        }
+        retval = prlimit(pid, resource, &new_limit, &old_limit);
+    }
+    else {
+        retval = prlimit(pid, resource, NULL, &old_limit);
+    }
+
+    if (retval == -1) {
+        if (errno == EINVAL) {
+            PyErr_SetString(PyExc_ValueError,
+                            "current limit exceeds maximum limit");
+        } else {
+            PyErr_SetFromErrno(PyExc_OSError);
+        }
+        return NULL;
+    }
+    return rlimit2py(old_limit);
+}
+#endif /* HAVE_PRLIMIT */
+
 static PyObject *
 resource_getpagesize(PyObject *self, PyObject *unused)
 {
@@ -229,6 +286,9 @@
 resource_methods[] = {
     {"getrusage",    resource_getrusage,   METH_VARARGS},
     {"getrlimit",    resource_getrlimit,   METH_VARARGS},
+#ifdef HAVE_PRLIMIT
+    {"prlimit",      resource_prlimit,     METH_VARARGS},
+#endif
     {"setrlimit",    resource_setrlimit,   METH_VARARGS},
     {"getpagesize",  resource_getpagesize, METH_NOARGS},
     {NULL, NULL}                             /* sentinel */
@@ -326,6 +386,28 @@
     PyModule_AddIntMacro(m, RLIMIT_SBSIZE);
 #endif
 
+/* Linux specific */
+#ifdef RLIMIT_MSGQUEUE
+    PyModule_AddIntMacro(m, RLIMIT_MSGQUEUE);
+#endif
+
+#ifdef RLIMIT_NICE
+    PyModule_AddIntMacro(m, RLIMIT_NICE);
+#endif
+
+#ifdef RLIMIT_RTPRIO
+    PyModule_AddIntMacro(m, RLIMIT_RTPRIO);
+#endif
+
+#ifdef RLIMIT_RTTIME
+    PyModule_AddIntMacro(m, RLIMIT_RTTIME);
+#endif
+
+#ifdef RLIMIT_SIGPENDING
+    PyModule_AddIntMacro(m, RLIMIT_SIGPENDING);
+#endif
+
+/* target */
 #ifdef RUSAGE_SELF
     PyModule_AddIntMacro(m, RUSAGE_SELF);
 #endif
diff --git a/Modules/sha1module.c b/Modules/sha1module.c
--- a/Modules/sha1module.c
+++ b/Modules/sha1module.c
@@ -544,8 +544,17 @@
 PyMODINIT_FUNC
 PyInit__sha1(void)
 {
+    PyObject *m;
+
     Py_TYPE(&SHA1type) = &PyType_Type;
     if (PyType_Ready(&SHA1type) < 0)
         return NULL;
-    return PyModule_Create(&_sha1module);
+
+    m = PyModule_Create(&_sha1module);
+    if (m == NULL)
+        return NULL;
+
+    Py_INCREF((PyObject *)&SHA1type);
+    PyModule_AddObject(m, "SHA1Type", (PyObject *)&SHA1type);
+    return m;
 }
diff --git a/Modules/sha256module.c b/Modules/sha256module.c
--- a/Modules/sha256module.c
+++ b/Modules/sha256module.c
@@ -706,11 +706,23 @@
 PyMODINIT_FUNC
 PyInit__sha256(void)
 {
+    PyObject *m;
+
     Py_TYPE(&SHA224type) = &PyType_Type;
     if (PyType_Ready(&SHA224type) < 0)
         return NULL;
     Py_TYPE(&SHA256type) = &PyType_Type;
     if (PyType_Ready(&SHA256type) < 0)
         return NULL;
-    return PyModule_Create(&_sha256module);
+
+    m = PyModule_Create(&_sha256module);
+    if (m == NULL)
+        return NULL;
+
+    Py_INCREF((PyObject *)&SHA224type);
+    PyModule_AddObject(m, "SHA224Type", (PyObject *)&SHA224type);
+    Py_INCREF((PyObject *)&SHA256type);
+    PyModule_AddObject(m, "SHA256Type", (PyObject *)&SHA256type);
+    return m;
+
 }
diff --git a/Modules/sha512module.c b/Modules/sha512module.c
--- a/Modules/sha512module.c
+++ b/Modules/sha512module.c
@@ -772,13 +772,24 @@
 PyMODINIT_FUNC
 PyInit__sha512(void)
 {
+    PyObject *m;
+
     Py_TYPE(&SHA384type) = &PyType_Type;
     if (PyType_Ready(&SHA384type) < 0)
         return NULL;
     Py_TYPE(&SHA512type) = &PyType_Type;
     if (PyType_Ready(&SHA512type) < 0)
         return NULL;
-    return PyModule_Create(&_sha512module);
+
+    m = PyModule_Create(&_sha512module);
+    if (m == NULL)
+        return NULL;
+
+    Py_INCREF((PyObject *)&SHA384type);
+    PyModule_AddObject(m, "SHA384Type", (PyObject *)&SHA384type);
+    Py_INCREF((PyObject *)&SHA512type);
+    PyModule_AddObject(m, "SHA512Type", (PyObject *)&SHA512type);
+    return m;
 }
 
 #endif
diff --git a/Modules/zlib/ChangeLog b/Modules/zlib/ChangeLog
--- a/Modules/zlib/ChangeLog
+++ b/Modules/zlib/ChangeLog
@@ -1,12 +1,276 @@
 
                 ChangeLog file for zlib
 
+Changes in 1.2.8 (28 Apr 2013)
+- Update contrib/minizip/iowin32.c for Windows RT [Vollant]
+- Do not force Z_CONST for C++
+- Clean up contrib/vstudio [Ro§]
+- Correct spelling error in zlib.h
+- Fix mixed line endings in contrib/vstudio
+
+Changes in 1.2.7.3 (13 Apr 2013)
+- Fix version numbers and DLL names in contrib/vstudio/*/zlib.rc
+
+Changes in 1.2.7.2 (13 Apr 2013)
+- Change check for a four-byte type back to hexadecimal
+- Fix typo in win32/Makefile.msc
+- Add casts in gzwrite.c for pointer differences
+
+Changes in 1.2.7.1 (24 Mar 2013)
+- Replace use of unsafe string functions with snprintf if available
+- Avoid including stddef.h on Windows for Z_SOLO compile [Niessink]
+- Fix gzgetc undefine when Z_PREFIX set [Turk]
+- Eliminate use of mktemp in Makefile (not always available)
+- Fix bug in 'F' mode for gzopen()
+- Add inflateGetDictionary() function
+- Correct comment in deflate.h
+- Use _snprintf for snprintf in Microsoft C
+- On Darwin, only use /usr/bin/libtool if libtool is not Apple
+- Delete "--version" file if created by "ar --version" [Richard G.]
+- Fix configure check for veracity of compiler error return codes
+- Fix CMake compilation of static lib for MSVC2010 x64
+- Remove unused variable in infback9.c
+- Fix argument checks in gzlog_compress() and gzlog_write()
+- Clean up the usage of z_const and respect const usage within zlib
+- Clean up examples/gzlog.[ch] comparisons of different types
+- Avoid shift equal to bits in type (caused endless loop)
+- Fix unintialized value bug in gzputc() introduced by const patches
+- Fix memory allocation error in examples/zran.c [Nor]
+- Fix bug where gzopen(), gzclose() would write an empty file
+- Fix bug in gzclose() when gzwrite() runs out of memory
+- Check for input buffer malloc failure in examples/gzappend.c
+- Add note to contrib/blast to use binary mode in stdio
+- Fix comparisons of differently signed integers in contrib/blast
+- Check for invalid code length codes in contrib/puff
+- Fix serious but very rare decompression bug in inftrees.c
+- Update inflateBack() comments, since inflate() can be faster
+- Use underscored I/O function names for WINAPI_FAMILY
+- Add _tr_flush_bits to the external symbols prefixed by --zprefix
+- Add contrib/vstudio/vc10 pre-build step for static only
+- Quote --version-script argument in CMakeLists.txt
+- Don't specify --version-script on Apple platforms in CMakeLists.txt
+- Fix casting error in contrib/testzlib/testzlib.c
+- Fix types in contrib/minizip to match result of get_crc_table()
+- Simplify contrib/vstudio/vc10 with 'd' suffix
+- Add TOP support to win32/Makefile.msc
+- Suport i686 and amd64 assembler builds in CMakeLists.txt
+- Fix typos in the use of _LARGEFILE64_SOURCE in zconf.h
+- Add vc11 and vc12 build files to contrib/vstudio
+- Add gzvprintf() as an undocumented function in zlib
+- Fix configure for Sun shell
+- Remove runtime check in configure for four-byte integer type
+- Add casts and consts to ease user conversion to C++
+- Add man pages for minizip and miniunzip
+- In Makefile uninstall, don't rm if preceding cd fails
+- Do not return Z_BUF_ERROR if deflateParam() has nothing to write
+
+Changes in 1.2.7 (2 May 2012)
+- Replace use of memmove() with a simple copy for portability
+- Test for existence of strerror
+- Restore gzgetc_ for backward compatibility with 1.2.6
+- Fix build with non-GNU make on Solaris
+- Require gcc 4.0 or later on Mac OS X to use the hidden attribute
+- Include unistd.h for Watcom C
+- Use __WATCOMC__ instead of __WATCOM__
+- Do not use the visibility attribute if NO_VIZ defined
+- Improve the detection of no hidden visibility attribute
+- Avoid using __int64 for gcc or solo compilation
+- Cast to char * in gzprintf to avoid warnings [Zinser]
+- Fix make_vms.com for VAX [Zinser]
+- Don't use library or built-in byte swaps
+- Simplify test and use of gcc hidden attribute
+- Fix bug in gzclose_w() when gzwrite() fails to allocate memory
+- Add "x" (O_EXCL) and "e" (O_CLOEXEC) modes support to gzopen()
+- Fix bug in test/minigzip.c for configure --solo
+- Fix contrib/vstudio project link errors [Mohanathas]
+- Add ability to choose the builder in make_vms.com [Schweda]
+- Add DESTDIR support to mingw32 win32/Makefile.gcc
+- Fix comments in win32/Makefile.gcc for proper usage
+- Allow overriding the default install locations for cmake
+- Generate and install the pkg-config file with cmake
+- Build both a static and a shared version of zlib with cmake
+- Include version symbols for cmake builds
+- If using cmake with MSVC, add the source directory to the includes
+- Remove unneeded EXTRA_CFLAGS from win32/Makefile.gcc [Truta]
+- Move obsolete emx makefile to old [Truta]
+- Allow the use of -Wundef when compiling or using zlib
+- Avoid the use of the -u option with mktemp
+- Improve inflate() documentation on the use of Z_FINISH
+- Recognize clang as gcc
+- Add gzopen_w() in Windows for wide character path names
+- Rename zconf.h in CMakeLists.txt to move it out of the way
+- Add source directory in CMakeLists.txt for building examples
+- Look in build directory for zlib.pc in CMakeLists.txt
+- Remove gzflags from zlibvc.def in vc9 and vc10
+- Fix contrib/minizip compilation in the MinGW environment
+- Update ./configure for Solaris, support --64 [Mooney]
+- Remove -R. from Solaris shared build (possible security issue)
+- Avoid race condition for parallel make (-j) running example
+- Fix type mismatch between get_crc_table() and crc_table
+- Fix parsing of version with "-" in CMakeLists.txt [Snider, Ziegler]
+- Fix the path to zlib.map in CMakeLists.txt
+- Force the native libtool in Mac OS X to avoid GNU libtool [Beebe]
+- Add instructions to win32/Makefile.gcc for shared install [Torri]
+
+Changes in 1.2.6.1 (12 Feb 2012)
+- Avoid the use of the Objective-C reserved name "id"
+- Include io.h in gzguts.h for Microsoft compilers
+- Fix problem with ./configure --prefix and gzgetc macro
+- Include gz_header definition when compiling zlib solo
+- Put gzflags() functionality back in zutil.c
+- Avoid library header include in crc32.c for Z_SOLO
+- Use name in GCC_CLASSIC as C compiler for coverage testing, if set
+- Minor cleanup in contrib/minizip/zip.c [Vollant]
+- Update make_vms.com [Zinser]
+- Remove unnecessary gzgetc_ function
+- Use optimized byte swap operations for Microsoft and GNU [Snyder]
+- Fix minor typo in zlib.h comments [Rzesniowiecki]
+
+Changes in 1.2.6 (29 Jan 2012)
+- Update the Pascal interface in contrib/pascal
+- Fix function numbers for gzgetc_ in zlibvc.def files
+- Fix configure.ac for contrib/minizip [Schiffer]
+- Fix large-entry detection in minizip on 64-bit systems [Schiffer]
+- Have ./configure use the compiler return code for error indication
+- Fix CMakeLists.txt for cross compilation [McClure]
+- Fix contrib/minizip/zip.c for 64-bit architectures [Dalsnes]
+- Fix compilation of contrib/minizip on FreeBSD [Marquez]
+- Correct suggested usages in win32/Makefile.msc [Shachar, Horvath]
+- Include io.h for Turbo C / Borland C on all platforms [Truta]
+- Make version explicit in contrib/minizip/configure.ac [Bosmans]
+- Avoid warning for no encryption in contrib/minizip/zip.c [Vollant]
+- Minor cleanup up contrib/minizip/unzip.c [Vollant]
+- Fix bug when compiling minizip with C++ [Vollant]
+- Protect for long name and extra fields in contrib/minizip [Vollant]
+- Avoid some warnings in contrib/minizip [Vollant]
+- Add -I../.. -L../.. to CFLAGS for minizip and miniunzip
+- Add missing libs to minizip linker command
+- Add support for VPATH builds in contrib/minizip
+- Add an --enable-demos option to contrib/minizip/configure
+- Add the generation of configure.log by ./configure
+- Exit when required parameters not provided to win32/Makefile.gcc
+- Have gzputc return the character written instead of the argument
+- Use the -m option on ldconfig for BSD systems [Tobias]
+- Correct in zlib.map when deflateResetKeep was added
+
+Changes in 1.2.5.3 (15 Jan 2012)
+- Restore gzgetc function for binary compatibility
+- Do not use _lseeki64 under Borland C++ [Truta]
+- Update win32/Makefile.msc to build test/*.c [Truta]
+- Remove old/visualc6 given CMakefile and other alternatives
+- Update AS400 build files and documentation [Monnerat]
+- Update win32/Makefile.gcc to build test/*.c [Truta]
+- Permit stronger flushes after Z_BLOCK flushes
+- Avoid extraneous empty blocks when doing empty flushes
+- Permit Z_NULL arguments to deflatePending
+- Allow deflatePrime() to insert bits in the middle of a stream
+- Remove second empty static block for Z_PARTIAL_FLUSH
+- Write out all of the available bits when using Z_BLOCK
+- Insert the first two strings in the hash table after a flush
+
+Changes in 1.2.5.2 (17 Dec 2011)
+- fix ld error: unable to find version dependency 'ZLIB_1.2.5'
+- use relative symlinks for shared libs
+- Avoid searching past window for Z_RLE strategy
+- Assure that high-water mark initialization is always applied in deflate
+- Add assertions to fill_window() in deflate.c to match comments
+- Update python link in README
+- Correct spelling error in gzread.c
+- Fix bug in gzgets() for a concatenated empty gzip stream
+- Correct error in comment for gz_make()
+- Change gzread() and related to ignore junk after gzip streams
+- Allow gzread() and related to continue after gzclearerr()
+- Allow gzrewind() and gzseek() after a premature end-of-file
+- Simplify gzseek() now that raw after gzip is ignored
+- Change gzgetc() to a macro for speed (~40% speedup in testing)
+- Fix gzclose() to return the actual error last encountered
+- Always add large file support for windows
+- Include zconf.h for windows large file support
+- Include zconf.h.cmakein for windows large file support
+- Update zconf.h.cmakein on make distclean
+- Merge vestigial vsnprintf determination from zutil.h to gzguts.h
+- Clarify how gzopen() appends in zlib.h comments
+- Correct documentation of gzdirect() since junk at end now ignored
+- Add a transparent write mode to gzopen() when 'T' is in the mode
+- Update python link in zlib man page
+- Get inffixed.h and MAKEFIXED result to match
+- Add a ./config --solo option to make zlib subset with no libary use
+- Add undocumented inflateResetKeep() function for CAB file decoding
+- Add --cover option to ./configure for gcc coverage testing
+- Add #define ZLIB_CONST option to use const in the z_stream interface
+- Add comment to gzdopen() in zlib.h to use dup() when using fileno()
+- Note behavior of uncompress() to provide as much data as it can
+- Add files in contrib/minizip to aid in building libminizip
+- Split off AR options in Makefile.in and configure
+- Change ON macro to Z_ARG to avoid application conflicts
+- Facilitate compilation with Borland C++ for pragmas and vsnprintf
+- Include io.h for Turbo C / Borland C++
+- Move example.c and minigzip.c to test/
+- Simplify incomplete code table filling in inflate_table()
+- Remove code from inflate.c and infback.c that is impossible to execute
+- Test the inflate code with full coverage
+- Allow deflateSetDictionary, inflateSetDictionary at any time (in raw)
+- Add deflateResetKeep and fix inflateResetKeep to retain dictionary
+- Fix gzwrite.c to accommodate reduced memory zlib compilation
+- Have inflate() with Z_FINISH avoid the allocation of a window
+- Do not set strm->adler when doing raw inflate
+- Fix gzeof() to behave just like feof() when read is not past end of file
+- Fix bug in gzread.c when end-of-file is reached
+- Avoid use of Z_BUF_ERROR in gz* functions except for premature EOF
+- Document gzread() capability to read concurrently written files
+- Remove hard-coding of resource compiler in CMakeLists.txt [Blammo]
+
+Changes in 1.2.5.1 (10 Sep 2011)
+- Update FAQ entry on shared builds (#13)
+- Avoid symbolic argument to chmod in Makefile.in
+- Fix bug and add consts in contrib/puff [Oberhumer]
+- Update contrib/puff/zeros.raw test file to have all block types
+- Add full coverage test for puff in contrib/puff/Makefile
+- Fix static-only-build install in Makefile.in
+- Fix bug in unzGetCurrentFileInfo() in contrib/minizip [Kuno]
+- Add libz.a dependency to shared in Makefile.in for parallel builds
+- Spell out "number" (instead of "nb") in zlib.h for total_in, total_out
+- Replace $(...) with `...` in configure for non-bash sh [Bowler]
+- Add darwin* to Darwin* and solaris* to SunOS\ 5* in configure [Groffen]
+- Add solaris* to Linux* in configure to allow gcc use [Groffen]
+- Add *bsd* to Linux* case in configure [Bar-Lev]
+- Add inffast.obj to dependencies in win32/Makefile.msc
+- Correct spelling error in deflate.h [Kohler]
+- Change libzdll.a again to libz.dll.a (!) in win32/Makefile.gcc
+- Add test to configure for GNU C looking for gcc in output of $cc -v
+- Add zlib.pc generation to win32/Makefile.gcc [Weigelt]
+- Fix bug in zlib.h for _FILE_OFFSET_BITS set and _LARGEFILE64_SOURCE not
+- Add comment in zlib.h that adler32_combine with len2 < 0 makes no sense
+- Make NO_DIVIDE option in adler32.c much faster (thanks to John Reiser)
+- Make stronger test in zconf.h to include unistd.h for LFS
+- Apply Darwin patches for 64-bit file offsets to contrib/minizip [Slack]
+- Fix zlib.h LFS support when Z_PREFIX used
+- Add updated as400 support (removed from old) [Monnerat]
+- Avoid deflate sensitivity to volatile input data
+- Avoid division in adler32_combine for NO_DIVIDE
+- Clarify the use of Z_FINISH with deflateBound() amount of space
+- Set binary for output file in puff.c
+- Use u4 type for crc_table to avoid conversion warnings
+- Apply casts in zlib.h to avoid conversion warnings
+- Add OF to prototypes for adler32_combine_ and crc32_combine_ [Miller]
+- Improve inflateSync() documentation to note indeterminancy
+- Add deflatePending() function to return the amount of pending output
+- Correct the spelling of "specification" in FAQ [Randers-Pehrson]
+- Add a check in configure for stdarg.h, use for gzprintf()
+- Check that pointers fit in ints when gzprint() compiled old style
+- Add dummy name before $(SHAREDLIBV) in Makefile [Bar-Lev, Bowler]
+- Delete line in configure that adds -L. libz.a to LDFLAGS [Weigelt]
+- Add debug records in assmebler code [Londer]
+- Update RFC references to use http://tools.ietf.org/html/... [Li]
+- Add --archs option, use of libtool to configure for Mac OS X [Borstel]
+
 Changes in 1.2.5 (19 Apr 2010)
 - Disable visibility attribute in win32/Makefile.gcc [Bar-Lev]
 - Default to libdir as sharedlibdir in configure [Nieder]
 - Update copyright dates on modified source files
 - Update trees.c to be able to generate modified trees.h
 - Exit configure for MinGW, suggesting win32/Makefile.gcc
+- Check for NULL path in gz_open [Homurlu]
 
 Changes in 1.2.4.5 (18 Apr 2010)
 - Set sharedlibdir in configure [Torok]
@@ -261,7 +525,7 @@
 - Clear bytes after deflate lookahead to avoid use of uninitialized data
 - Change a limit in inftrees.c to be more transparent to Coverity Prevent
 - Update win32/zlib.def with exported symbols from zlib.h
-- Correct spelling error in zlib.h [Willem]
+- Correct spelling errors in zlib.h [Willem, Sobrado]
 - Allow Z_BLOCK for deflate() to force a new block
 - Allow negative bits in inflatePrime() to delete existing bit buffer
 - Add Z_TREES flush option to inflate() to return at end of trees
diff --git a/Modules/zlib/FAQ b/Modules/zlib/FAQ
--- a/Modules/zlib/FAQ
+++ b/Modules/zlib/FAQ
@@ -44,8 +44,8 @@
 
  6. Where's the zlib documentation (man pages, etc.)?
 
-    It's in zlib.h .  Examples of zlib usage are in the files example.c and
-    minigzip.c, with more in examples/ .
+    It's in zlib.h .  Examples of zlib usage are in the files test/example.c
+    and test/minigzip.c, with more in examples/ .
 
  7. Why don't you use GNU autoconf or libtool or ...?
 
@@ -84,8 +84,10 @@
 
 13. How can I make a Unix shared library?
 
-    make clean
-    ./configure -s
+    By default a shared (and a static) library is built for Unix.  So:
+
+    make distclean
+    ./configure
     make
 
 14. How do I install a shared zlib library on Unix?
@@ -325,7 +327,7 @@
     correctly points to the zlib specification in RFC 1950 for the "deflate"
     transfer encoding, there have been reports of servers and browsers that
     incorrectly produce or expect raw deflate data per the deflate
-    specficiation in RFC 1951, most notably Microsoft.  So even though the
+    specification in RFC 1951, most notably Microsoft.  So even though the
     "deflate" transfer encoding using the zlib format would be the more
     efficient approach (and in fact exactly what the zlib format was designed
     for), using the "gzip" transfer encoding is probably more reliable due to
diff --git a/Modules/zlib/INDEX b/Modules/zlib/INDEX
--- a/Modules/zlib/INDEX
+++ b/Modules/zlib/INDEX
@@ -7,6 +7,9 @@
 README          guess what
 configure       configure script for Unix
 make_vms.com    makefile for VMS
+test/example.c  zlib usages examples for build testing
+test/minigzip.c minimal gzip-like functionality for build testing
+test/infcover.c inf*.c code coverage for build coverage testing
 treebuild.xml   XML description of source file dependencies
 zconf.h.cmakein zconf.h template for cmake
 zconf.h.in      zconf.h template for configure
@@ -14,9 +17,11 @@
 zlib.3.pdf      Man page in PDF format
 zlib.map        Linux symbol information
 zlib.pc.in      Template for pkg-config descriptor
+zlib.pc.cmakein zlib.pc template for cmake
 zlib2ansi       perl script to convert source files for C++ compilation
 
 amiga/          makefiles for Amiga SAS C
+as400/          makefiles for AS/400
 doc/            documentation for formats and algorithms
 msdos/          makefiles for MSDOS
 nintendods/     makefile for Nintendo DS
@@ -56,10 +61,8 @@
 zutil.c
 zutil.h
 
-                source files for sample programs:
-example.c
-minigzip.c
-See examples/README.examples for more
+                source files for sample programs
+See examples/README.examples
 
-                unsupported contribution by third parties
+                unsupported contributions by third parties
 See contrib/README.contrib
diff --git a/Modules/zlib/Makefile.in b/Modules/zlib/Makefile.in
--- a/Modules/zlib/Makefile.in
+++ b/Modules/zlib/Makefile.in
@@ -1,5 +1,5 @@
 # Makefile for zlib
-# Copyright (C) 1995-2010 Jean-loup Gailly.
+# Copyright (C) 1995-2013 Jean-loup Gailly, Mark Adler
 # For conditions of distribution and use, see copyright notice in zlib.h
 
 # To compile and test, type:
@@ -32,11 +32,12 @@
 
 STATICLIB=libz.a
 SHAREDLIB=libz.so
-SHAREDLIBV=libz.so.1.2.5
+SHAREDLIBV=libz.so.1.2.8
 SHAREDLIBM=libz.so.1
 LIBS=$(STATICLIB) $(SHAREDLIBV)
 
-AR=ar rc
+AR=ar
+ARFLAGS=rc
 RANLIB=ranlib
 LDCONFIG=ldconfig
 LDSHAREDLIBC=-lc
@@ -53,11 +54,13 @@
 man3dir = ${mandir}/man3
 pkgconfigdir = ${libdir}/pkgconfig
 
-OBJC = adler32.o compress.o crc32.o deflate.o gzclose.o gzlib.o gzread.o \
-	gzwrite.o infback.o inffast.o inflate.o inftrees.o trees.o uncompr.o zutil.o
+OBJZ = adler32.o crc32.o deflate.o infback.o inffast.o inflate.o inftrees.o trees.o zutil.o
+OBJG = compress.o uncompr.o gzclose.o gzlib.o gzread.o gzwrite.o
+OBJC = $(OBJZ) $(OBJG)
 
-PIC_OBJC = adler32.lo compress.lo crc32.lo deflate.lo gzclose.lo gzlib.lo gzread.lo \
-	gzwrite.lo infback.lo inffast.lo inflate.lo inftrees.lo trees.lo uncompr.lo zutil.lo
+PIC_OBJZ = adler32.lo crc32.lo deflate.lo infback.lo inffast.lo inflate.lo inftrees.lo trees.lo zutil.lo
+PIC_OBJG = compress.lo uncompr.lo gzclose.lo gzlib.lo gzread.lo gzwrite.lo
+PIC_OBJC = $(PIC_OBJZ) $(PIC_OBJG)
 
 # to use the asm code: make OBJA=match.o, PIC_OBJA=match.lo
 OBJA =
@@ -80,35 +83,49 @@
 test: all teststatic testshared
 
 teststatic: static
-	@if echo hello world | ./minigzip | ./minigzip -d && ./example; then \
+	@TMPST=tmpst_$$; \
+	if echo hello world | ./minigzip | ./minigzip -d && ./example $$TMPST ; then \
 	  echo '		*** zlib test OK ***'; \
 	else \
 	  echo '		*** zlib test FAILED ***'; false; \
-	fi
-	- at rm -f foo.gz
+	fi; \
+	rm -f $$TMPST
 
 testshared: shared
 	@LD_LIBRARY_PATH=`pwd`:$(LD_LIBRARY_PATH) ; export LD_LIBRARY_PATH; \
 	LD_LIBRARYN32_PATH=`pwd`:$(LD_LIBRARYN32_PATH) ; export LD_LIBRARYN32_PATH; \
 	DYLD_LIBRARY_PATH=`pwd`:$(DYLD_LIBRARY_PATH) ; export DYLD_LIBRARY_PATH; \
 	SHLIB_PATH=`pwd`:$(SHLIB_PATH) ; export SHLIB_PATH; \
-	if echo hello world | ./minigzipsh | ./minigzipsh -d && ./examplesh; then \
+	TMPSH=tmpsh_$$; \
+	if echo hello world | ./minigzipsh | ./minigzipsh -d && ./examplesh $$TMPSH; then \
 	  echo '		*** zlib shared test OK ***'; \
 	else \
 	  echo '		*** zlib shared test FAILED ***'; false; \
-	fi
-	- at rm -f foo.gz
+	fi; \
+	rm -f $$TMPSH
 
 test64: all64
-	@if echo hello world | ./minigzip64 | ./minigzip64 -d && ./example64; then \
+	@TMP64=tmp64_$$; \
+	if echo hello world | ./minigzip64 | ./minigzip64 -d && ./example64 $$TMP64; then \
 	  echo '		*** zlib 64-bit test OK ***'; \
 	else \
 	  echo '		*** zlib 64-bit test FAILED ***'; false; \
-	fi
-	- at rm -f foo.gz
+	fi; \
+	rm -f $$TMP64
+
+infcover.o: test/infcover.c zlib.h zconf.h
+	$(CC) $(CFLAGS) -I. -c -o $@ test/infcover.c
+
+infcover: infcover.o libz.a
+	$(CC) $(CFLAGS) -o $@ infcover.o libz.a
+
+cover: infcover
+	rm -f *.gcda
+	./infcover
+	gcov inf*.c
 
 libz.a: $(OBJS)
-	$(AR) $@ $(OBJS)
+	$(AR) $(ARFLAGS) $@ $(OBJS)
 	-@ ($(RANLIB) $@ || true) >/dev/null 2>&1
 
 match.o: match.S
@@ -123,11 +140,17 @@
 	mv _match.o match.lo
 	rm -f _match.s
 
-example64.o: example.c zlib.h zconf.h
-	$(CC) $(CFLAGS) -D_FILE_OFFSET_BITS=64 -c -o $@ example.c
+example.o: test/example.c zlib.h zconf.h
+	$(CC) $(CFLAGS) -I. -c -o $@ test/example.c
 
-minigzip64.o: minigzip.c zlib.h zconf.h
-	$(CC) $(CFLAGS) -D_FILE_OFFSET_BITS=64 -c -o $@ minigzip.c
+minigzip.o: test/minigzip.c zlib.h zconf.h
+	$(CC) $(CFLAGS) -I. -c -o $@ test/minigzip.c
+
+example64.o: test/example.c zlib.h zconf.h
+	$(CC) $(CFLAGS) -I. -D_FILE_OFFSET_BITS=64 -c -o $@ test/example.c
+
+minigzip64.o: test/minigzip.c zlib.h zconf.h
+	$(CC) $(CFLAGS) -I. -D_FILE_OFFSET_BITS=64 -c -o $@ test/minigzip.c
 
 .SUFFIXES: .lo
 
@@ -136,7 +159,7 @@
 	$(CC) $(SFLAGS) -DPIC -c -o objs/$*.o $<
 	- at mv objs/$*.o $@
 
-$(SHAREDLIBV): $(PIC_OBJS)
+placebo $(SHAREDLIBV): $(PIC_OBJS) libz.a
 	$(LDSHARED) $(SFLAGS) -o $@ $(PIC_OBJS) $(LDSHAREDLIBC) $(LDFLAGS)
 	rm -f $(SHAREDLIB) $(SHAREDLIBM)
 	ln -s $@ $(SHAREDLIB)
@@ -168,14 +191,16 @@
 	- at if [ ! -d $(DESTDIR)$(man3dir)      ]; then mkdir -p $(DESTDIR)$(man3dir); fi
 	- at if [ ! -d $(DESTDIR)$(pkgconfigdir) ]; then mkdir -p $(DESTDIR)$(pkgconfigdir); fi
 	cp $(STATICLIB) $(DESTDIR)$(libdir)
-	cp $(SHAREDLIBV) $(DESTDIR)$(sharedlibdir)
-	cd $(DESTDIR)$(libdir); chmod u=rw,go=r $(STATICLIB)
-	-@(cd $(DESTDIR)$(libdir); $(RANLIB) libz.a || true) >/dev/null 2>&1
-	- at cd $(DESTDIR)$(sharedlibdir); if test "$(SHAREDLIBV)" -a -f $(SHAREDLIBV); then \
-	  chmod 755 $(SHAREDLIBV); \
-	  rm -f $(SHAREDLIB) $(SHAREDLIBM); \
-	  ln -s $(SHAREDLIBV) $(SHAREDLIB); \
-	  ln -s $(SHAREDLIBV) $(SHAREDLIBM); \
+	chmod 644 $(DESTDIR)$(libdir)/$(STATICLIB)
+	-@($(RANLIB) $(DESTDIR)$(libdir)/libz.a || true) >/dev/null 2>&1
+	- at if test -n "$(SHAREDLIBV)"; then \
+	  cp $(SHAREDLIBV) $(DESTDIR)$(sharedlibdir); \
+	  echo "cp $(SHAREDLIBV) $(DESTDIR)$(sharedlibdir)"; \
+	  chmod 755 $(DESTDIR)$(sharedlibdir)/$(SHAREDLIBV); \
+	  echo "chmod 755 $(DESTDIR)$(sharedlibdir)/$(SHAREDLIBV)"; \
+	  rm -f $(DESTDIR)$(sharedlibdir)/$(SHAREDLIB) $(DESTDIR)$(sharedlibdir)/$(SHAREDLIBM); \
+	  ln -s $(SHAREDLIBV) $(DESTDIR)$(sharedlibdir)/$(SHAREDLIB); \
+	  ln -s $(SHAREDLIBV) $(DESTDIR)$(sharedlibdir)/$(SHAREDLIBM); \
 	  ($(LDCONFIG) || true)  >/dev/null 2>&1; \
 	fi
 	cp zlib.3 $(DESTDIR)$(man3dir)
@@ -191,22 +216,25 @@
 	chmod 644 $(DESTDIR)$(includedir)/zlib.h $(DESTDIR)$(includedir)/zconf.h
 
 uninstall:
-	cd $(DESTDIR)$(includedir); rm -f zlib.h zconf.h
-	cd $(DESTDIR)$(libdir); rm -f libz.a; \
-	if test "$(SHAREDLIBV)" -a -f $(SHAREDLIBV); then \
+	cd $(DESTDIR)$(includedir) && rm -f zlib.h zconf.h
+	cd $(DESTDIR)$(libdir) && rm -f libz.a; \
+	if test -n "$(SHAREDLIBV)" -a -f $(SHAREDLIBV); then \
 	  rm -f $(SHAREDLIBV) $(SHAREDLIB) $(SHAREDLIBM); \
 	fi
-	cd $(DESTDIR)$(man3dir); rm -f zlib.3
-	cd $(DESTDIR)$(pkgconfigdir); rm -f zlib.pc
+	cd $(DESTDIR)$(man3dir) && rm -f zlib.3
+	cd $(DESTDIR)$(pkgconfigdir) && rm -f zlib.pc
 
 docs: zlib.3.pdf
 
 zlib.3.pdf: zlib.3
 	groff -mandoc -f H -T ps zlib.3 | ps2pdf - zlib.3.pdf
 
-zconf.h.in: zconf.h.cmakein
-	sed "/^#cmakedefine/D" < zconf.h.cmakein > zconf.h.in
-	touch -r zconf.h.cmakein zconf.h.in
+zconf.h.cmakein: zconf.h.in
+	-@ TEMPFILE=zconfh_$$; \
+	echo "/#define ZCONF_H/ a\\\\\n#cmakedefine Z_PREFIX\\\\\n#cmakedefine Z_HAVE_UNISTD_H\n" >> $$TEMPFILE &&\
+	sed -f $$TEMPFILE zconf.h.in > zconf.h.cmakein &&\
+	touch -r zconf.h.in zconf.h.cmakein &&\
+	rm $$TEMPFILE
 
 zconf: zconf.h.in
 	cp -p zconf.h.in zconf.h
@@ -216,13 +244,16 @@
 	rm -f *.o *.lo *~ \
 	   example$(EXE) minigzip$(EXE) examplesh$(EXE) minigzipsh$(EXE) \
 	   example64$(EXE) minigzip64$(EXE) \
+	   infcover \
 	   libz.* foo.gz so_locations \
 	   _match.s maketree contrib/infback9/*.o
 	rm -rf objs
+	rm -f *.gcda *.gcno *.gcov
+	rm -f contrib/infback9/*.gcda contrib/infback9/*.gcno contrib/infback9/*.gcov
 
 maintainer-clean: distclean
-distclean: clean zconf docs
-	rm -f Makefile zlib.pc
+distclean: clean zconf zconf.h.cmakein docs
+	rm -f Makefile zlib.pc configure.log
 	- at rm -f .DS_Store
 	- at printf 'all:\n\t- at echo "Please use ./configure first.  Thank you."\n' > Makefile
 	- at printf '\ndistclean:\n\tmake -f Makefile.in distclean\n' >> Makefile
diff --git a/Modules/zlib/README b/Modules/zlib/README
--- a/Modules/zlib/README
+++ b/Modules/zlib/README
@@ -1,22 +1,22 @@
 ZLIB DATA COMPRESSION LIBRARY
 
-zlib 1.2.5 is a general purpose data compression library.  All the code is
+zlib 1.2.8 is a general purpose data compression library.  All the code is
 thread safe.  The data format used by the zlib library is described by RFCs
 (Request for Comments) 1950 to 1952 in the files
-http://www.ietf.org/rfc/rfc1950.txt (zlib format), rfc1951.txt (deflate format)
-and rfc1952.txt (gzip format).
+http://tools.ietf.org/html/rfc1950 (zlib format), rfc1951 (deflate format) and
+rfc1952 (gzip format).
 
 All functions of the compression library are documented in the file zlib.h
 (volunteer to write man pages welcome, contact zlib at gzip.org).  A usage example
-of the library is given in the file example.c which also tests that the library
-is working correctly.  Another example is given in the file minigzip.c.  The
-compression library itself is composed of all source files except example.c and
-minigzip.c.
+of the library is given in the file test/example.c which also tests that
+the library is working correctly.  Another example is given in the file
+test/minigzip.c.  The compression library itself is composed of all source
+files in the root directory.
 
 To compile all files and run the test program, follow the instructions given at
 the top of Makefile.in.  In short "./configure; make test", and if that goes
-well, "make install" should work for most flavors of Unix.  For Windows, use one
-of the special makefiles in win32/ or contrib/vstudio/ .  For VMS, use
+well, "make install" should work for most flavors of Unix.  For Windows, use
+one of the special makefiles in win32/ or contrib/vstudio/ .  For VMS, use
 make_vms.com.
 
 Questions about zlib should be sent to <zlib at gzip.org>, or to Gilles Vollant
@@ -31,7 +31,7 @@
 issue of Dr.  Dobb's Journal; a copy of the article is available at
 http://marknelson.us/1997/01/01/zlib-engine/ .
 
-The changes made in version 1.2.5 are documented in the file ChangeLog.
+The changes made in version 1.2.8 are documented in the file ChangeLog.
 
 Unsupported third party contributions are provided in directory contrib/ .
 
@@ -44,7 +44,7 @@
 
 A Python interface to zlib written by A.M. Kuchling <amk at amk.ca> is
 available in Python 1.5 and later versions, see
-http://www.python.org/doc/lib/module-zlib.html .
+http://docs.python.org/library/zlib.html .
 
 zlib is built into tcl: http://wiki.tcl.tk/4610 .
 
@@ -84,7 +84,7 @@
 
 Copyright notice:
 
- (C) 1995-2010 Jean-loup Gailly and Mark Adler
+ (C) 1995-2013 Jean-loup Gailly and Mark Adler
 
   This software is provided 'as-is', without any express or implied
   warranty.  In no event will the authors be held liable for any damages
diff --git a/Modules/zlib/adler32.c b/Modules/zlib/adler32.c
--- a/Modules/zlib/adler32.c
+++ b/Modules/zlib/adler32.c
@@ -1,5 +1,5 @@
 /* adler32.c -- compute the Adler-32 checksum of a data stream
- * Copyright (C) 1995-2007 Mark Adler
+ * Copyright (C) 1995-2011 Mark Adler
  * For conditions of distribution and use, see copyright notice in zlib.h
  */
 
@@ -9,9 +9,9 @@
 
 #define local static
 
-local uLong adler32_combine_(uLong adler1, uLong adler2, z_off64_t len2);
+local uLong adler32_combine_ OF((uLong adler1, uLong adler2, z_off64_t len2));
 
-#define BASE 65521UL    /* largest prime smaller than 65536 */
+#define BASE 65521      /* largest prime smaller than 65536 */
 #define NMAX 5552
 /* NMAX is the largest n such that 255n(n+1)/2 + (n+1)(BASE-1) <= 2^32-1 */
 
@@ -21,39 +21,44 @@
 #define DO8(buf,i)  DO4(buf,i); DO4(buf,i+4);
 #define DO16(buf)   DO8(buf,0); DO8(buf,8);
 
-/* use NO_DIVIDE if your processor does not do division in hardware */
+/* use NO_DIVIDE if your processor does not do division in hardware --
+   try it both ways to see which is faster */
 #ifdef NO_DIVIDE
+/* note that this assumes BASE is 65521, where 65536 % 65521 == 15
+   (thank you to John Reiser for pointing this out) */
+#  define CHOP(a) \
+    do { \
+        unsigned long tmp = a >> 16; \
+        a &= 0xffffUL; \
+        a += (tmp << 4) - tmp; \
+    } while (0)
+#  define MOD28(a) \
+    do { \
+        CHOP(a); \
+        if (a >= BASE) a -= BASE; \
+    } while (0)
 #  define MOD(a) \
     do { \
-        if (a >= (BASE << 16)) a -= (BASE << 16); \
-        if (a >= (BASE << 15)) a -= (BASE << 15); \
-        if (a >= (BASE << 14)) a -= (BASE << 14); \
-        if (a >= (BASE << 13)) a -= (BASE << 13); \
-        if (a >= (BASE << 12)) a -= (BASE << 12); \
-        if (a >= (BASE << 11)) a -= (BASE << 11); \
-        if (a >= (BASE << 10)) a -= (BASE << 10); \
-        if (a >= (BASE << 9)) a -= (BASE << 9); \
-        if (a >= (BASE << 8)) a -= (BASE << 8); \
-        if (a >= (BASE << 7)) a -= (BASE << 7); \
-        if (a >= (BASE << 6)) a -= (BASE << 6); \
-        if (a >= (BASE << 5)) a -= (BASE << 5); \
-        if (a >= (BASE << 4)) a -= (BASE << 4); \
-        if (a >= (BASE << 3)) a -= (BASE << 3); \
-        if (a >= (BASE << 2)) a -= (BASE << 2); \
-        if (a >= (BASE << 1)) a -= (BASE << 1); \
-        if (a >= BASE) a -= BASE; \
+        CHOP(a); \
+        MOD28(a); \
     } while (0)
-#  define MOD4(a) \
-    do { \
-        if (a >= (BASE << 4)) a -= (BASE << 4); \
-        if (a >= (BASE << 3)) a -= (BASE << 3); \
-        if (a >= (BASE << 2)) a -= (BASE << 2); \
-        if (a >= (BASE << 1)) a -= (BASE << 1); \
+#  define MOD63(a) \
+    do { /* this assumes a is not negative */ \
+        z_off64_t tmp = a >> 32; \
+        a &= 0xffffffffL; \
+        a += (tmp << 8) - (tmp << 5) + tmp; \
+        tmp = a >> 16; \
+        a &= 0xffffL; \
+        a += (tmp << 4) - tmp; \
+        tmp = a >> 16; \
+        a &= 0xffffL; \
+        a += (tmp << 4) - tmp; \
         if (a >= BASE) a -= BASE; \
     } while (0)
 #else
 #  define MOD(a) a %= BASE
-#  define MOD4(a) a %= BASE
+#  define MOD28(a) a %= BASE
+#  define MOD63(a) a %= BASE
 #endif
 
 /* ========================================================================= */
@@ -92,7 +97,7 @@
         }
         if (adler >= BASE)
             adler -= BASE;
-        MOD4(sum2);             /* only added so many BASE's */
+        MOD28(sum2);            /* only added so many BASE's */
         return adler | (sum2 << 16);
     }
 
@@ -137,8 +142,13 @@
     unsigned long sum2;
     unsigned rem;
 
+    /* for negative len, return invalid adler32 as a clue for debugging */
+    if (len2 < 0)
+        return 0xffffffffUL;
+
     /* the derivation of this formula is left as an exercise for the reader */
-    rem = (unsigned)(len2 % BASE);
+    MOD63(len2);                /* assumes len2 >= 0 */
+    rem = (unsigned)len2;
     sum1 = adler1 & 0xffff;
     sum2 = rem * sum1;
     MOD(sum2);
diff --git a/Modules/zlib/algorithm.txt b/Modules/zlib/algorithm.txt
--- a/Modules/zlib/algorithm.txt
+++ b/Modules/zlib/algorithm.txt
@@ -121,7 +121,7 @@
 kbytes.  You can imagine that filling in a 2^15 entry table for a 15-bit code
 would take too long if you're only decoding several thousand symbols.  At the
 other extreme, you could make a new table for every bit in the code.  In fact,
-that's essentially a Huffman tree.  But then you spend two much time
+that's essentially a Huffman tree.  But then you spend too much time
 traversing the tree while decoding, even for short symbols.
 
 So the number of bits for the first lookup table is a trade of the time to
@@ -206,4 +206,4 @@
 pp. 337-343.
 
 ``DEFLATE Compressed Data Format Specification'' available in
-http://www.ietf.org/rfc/rfc1951.txt
+http://tools.ietf.org/html/rfc1951
diff --git a/Modules/zlib/compress.c b/Modules/zlib/compress.c
--- a/Modules/zlib/compress.c
+++ b/Modules/zlib/compress.c
@@ -29,7 +29,7 @@
     z_stream stream;
     int err;
 
-    stream.next_in = (Bytef*)source;
+    stream.next_in = (z_const Bytef *)source;
     stream.avail_in = (uInt)sourceLen;
 #ifdef MAXSEG_64K
     /* Check for source > 64K on 16-bit machine: */
diff --git a/Modules/zlib/configure b/Modules/zlib/configure
--- a/Modules/zlib/configure
+++ b/Modules/zlib/configure
@@ -13,39 +13,52 @@
 # If you have problems, try without defining CC and CFLAGS before reporting
 # an error.
 
+# start off configure.log
+echo -------------------- >> configure.log
+echo $0 $* >> configure.log
+date >> configure.log
+
+# set command prefix for cross-compilation
 if [ -n "${CHOST}" ]; then
-    uname="$(echo "${CHOST}" | sed -e 's/^[^-]*-\([^-]*\)$/\1/' -e 's/^[^-]*-[^-]*-\([^-]*\)$/\1/' -e 's/^[^-]*-[^-]*-\([^-]*\)-.*$/\1/')"
+    uname="`echo "${CHOST}" | sed -e 's/^[^-]*-\([^-]*\)$/\1/' -e 's/^[^-]*-[^-]*-\([^-]*\)$/\1/' -e 's/^[^-]*-[^-]*-\([^-]*\)-.*$/\1/'`"
     CROSS_PREFIX="${CHOST}-"
 fi
 
+# destination name for static library
 STATICLIB=libz.a
-LDFLAGS="${LDFLAGS} -L. ${STATICLIB}"
+
+# extract zlib version numbers from zlib.h
 VER=`sed -n -e '/VERSION "/s/.*"\(.*\)".*/\1/p' < zlib.h`
 VER3=`sed -n -e '/VERSION "/s/.*"\([0-9]*\\.[0-9]*\\.[0-9]*\).*/\1/p' < zlib.h`
 VER2=`sed -n -e '/VERSION "/s/.*"\([0-9]*\\.[0-9]*\)\\..*/\1/p' < zlib.h`
 VER1=`sed -n -e '/VERSION "/s/.*"\([0-9]*\)\\..*/\1/p' < zlib.h`
+
+# establish commands for library building
 if "${CROSS_PREFIX}ar" --version >/dev/null 2>/dev/null || test $? -lt 126; then
     AR=${AR-"${CROSS_PREFIX}ar"}
-    test -n "${CROSS_PREFIX}" && echo Using ${AR}
+    test -n "${CROSS_PREFIX}" && echo Using ${AR} | tee -a configure.log
 else
     AR=${AR-"ar"}
-    test -n "${CROSS_PREFIX}" && echo Using ${AR}
+    test -n "${CROSS_PREFIX}" && echo Using ${AR} | tee -a configure.log
 fi
-AR_RC="${AR} rc"
+ARFLAGS=${ARFLAGS-"rc"}
 if "${CROSS_PREFIX}ranlib" --version >/dev/null 2>/dev/null || test $? -lt 126; then
     RANLIB=${RANLIB-"${CROSS_PREFIX}ranlib"}
-    test -n "${CROSS_PREFIX}" && echo Using ${RANLIB}
+    test -n "${CROSS_PREFIX}" && echo Using ${RANLIB} | tee -a configure.log
 else
     RANLIB=${RANLIB-"ranlib"}
 fi
 if "${CROSS_PREFIX}nm" --version >/dev/null 2>/dev/null || test $? -lt 126; then
     NM=${NM-"${CROSS_PREFIX}nm"}
-    test -n "${CROSS_PREFIX}" && echo Using ${NM}
+    test -n "${CROSS_PREFIX}" && echo Using ${NM} | tee -a configure.log
 else
     NM=${NM-"nm"}
 fi
+
+# set defaults before processing command line options
 LDCONFIG=${LDCONFIG-"ldconfig"}
 LDSHAREDLIBC="${LDSHAREDLIBC--lc}"
+ARCHS=
 prefix=${prefix-/usr/local}
 exec_prefix=${exec_prefix-'${prefix}'}
 libdir=${libdir-'${exec_prefix}/lib'}
@@ -54,20 +67,39 @@
 mandir=${mandir-'${prefix}/share/man'}
 shared_ext='.so'
 shared=1
+solo=0
+cover=0
 zprefix=0
+zconst=0
 build64=0
 gcc=0
 old_cc="$CC"
 old_cflags="$CFLAGS"
+OBJC='$(OBJZ) $(OBJG)'
+PIC_OBJC='$(PIC_OBJZ) $(PIC_OBJG)'
 
+# leave this script, optionally in a bad way
+leave()
+{
+  if test "$*" != "0"; then
+    echo "** $0 aborting." | tee -a configure.log
+  fi
+  rm -f $test.[co] $test $test$shared_ext $test.gcno ./--version
+  echo -------------------- >> configure.log
+  echo >> configure.log
+  echo >> configure.log
+  exit $1
+}
+
+# process command line options
 while test $# -ge 1
 do
 case "$1" in
     -h* | --help)
-      echo 'usage:'
-      echo '  configure [--zprefix] [--prefix=PREFIX]  [--eprefix=EXPREFIX]'
-      echo '    [--static] [--64] [--libdir=LIBDIR] [--sharedlibdir=LIBDIR]'
-      echo '    [--includedir=INCLUDEDIR]'
+      echo 'usage:' | tee -a configure.log
+      echo '  configure [--const] [--zprefix] [--prefix=PREFIX]  [--eprefix=EXPREFIX]' | tee -a configure.log
+      echo '    [--static] [--64] [--libdir=LIBDIR] [--sharedlibdir=LIBDIR]' | tee -a configure.log
+      echo '    [--includedir=INCLUDEDIR] [--archs="-arch i386 -arch x86_64"]' | tee -a configure.log
         exit 0 ;;
     -p*=* | --prefix=*) prefix=`echo $1 | sed 's/.*=//'`; shift ;;
     -e*=* | --eprefix=*) exec_prefix=`echo $1 | sed 's/.*=//'`; shift ;;
@@ -81,51 +113,88 @@
     -i* | --includedir) includedir="$2"; shift; shift ;;
     -s* | --shared | --enable-shared) shared=1; shift ;;
     -t | --static) shared=0; shift ;;
+    --solo) solo=1; shift ;;
+    --cover) cover=1; shift ;;
     -z* | --zprefix) zprefix=1; shift ;;
     -6* | --64) build64=1; shift ;;
-    --sysconfdir=*) echo "ignored option: --sysconfdir"; shift ;;
-    --localstatedir=*) echo "ignored option: --localstatedir"; shift ;;
-    *) echo "unknown option: $1"; echo "$0 --help for help"; exit 1 ;;
+    -a*=* | --archs=*) ARCHS=`echo $1 | sed 's/.*=//'`; shift ;;
+    --sysconfdir=*) echo "ignored option: --sysconfdir" | tee -a configure.log; shift ;;
+    --localstatedir=*) echo "ignored option: --localstatedir" | tee -a configure.log; shift ;;
+    -c* | --const) zconst=1; shift ;;
+    *)
+      echo "unknown option: $1" | tee -a configure.log
+      echo "$0 --help for help" | tee -a configure.log
+      leave 1;;
     esac
 done
 
+# temporary file name
 test=ztest$$
+
+# put arguments in log, also put test file in log if used in arguments
+show()
+{
+  case "$*" in
+    *$test.c*)
+      echo === $test.c === >> configure.log
+      cat $test.c >> configure.log
+      echo === >> configure.log;;
+  esac
+  echo $* >> configure.log
+}
+
+# check for gcc vs. cc and set compile and link flags based on the system identified by uname
 cat > $test.c <<EOF
 extern int getchar();
 int hello() {return getchar();}
 EOF
 
-test -z "$CC" && echo Checking for ${CROSS_PREFIX}gcc...
+test -z "$CC" && echo Checking for ${CROSS_PREFIX}gcc... | tee -a configure.log
 cc=${CC-${CROSS_PREFIX}gcc}
 cflags=${CFLAGS-"-O3"}
 # to force the asm version use: CFLAGS="-O3 -DASMV" ./configure
 case "$cc" in
   *gcc*) gcc=1 ;;
+  *clang*) gcc=1 ;;
+esac
+case `$cc -v 2>&1` in
+  *gcc*) gcc=1 ;;
 esac
 
-if test "$gcc" -eq 1 && ($cc -c $cflags $test.c) 2>/dev/null; then
+show $cc -c $test.c
+if test "$gcc" -eq 1 && ($cc -c $test.c) >> configure.log 2>&1; then
+  echo ... using gcc >> configure.log
   CC="$cc"
+  CFLAGS="${CFLAGS--O3} ${ARCHS}"
   SFLAGS="${CFLAGS--O3} -fPIC"
-  CFLAGS="${CFLAGS--O3}"
+  LDFLAGS="${LDFLAGS} ${ARCHS}"
   if test $build64 -eq 1; then
     CFLAGS="${CFLAGS} -m64"
     SFLAGS="${SFLAGS} -m64"
   fi
   if test "${ZLIBGCCWARN}" = "YES"; then
-    CFLAGS="${CFLAGS} -Wall -Wextra -pedantic"
+    if test "$zconst" -eq 1; then
+      CFLAGS="${CFLAGS} -Wall -Wextra -Wcast-qual -pedantic -DZLIB_CONST"
+    else
+      CFLAGS="${CFLAGS} -Wall -Wextra -pedantic"
+    fi
   fi
   if test -z "$uname"; then
     uname=`(uname -s || echo unknown) 2>/dev/null`
   fi
   case "$uname" in
-  Linux* | linux* | GNU | GNU/* | *BSD | DragonFly) LDSHARED=${LDSHARED-"$cc -shared -Wl,-soname,libz.so.1,--version-script,zlib.map"} ;;
+  Linux* | linux* | GNU | GNU/* | solaris*)
+        LDSHARED=${LDSHARED-"$cc -shared -Wl,-soname,libz.so.1,--version-script,zlib.map"} ;;
+  *BSD | *bsd* | DragonFly)
+        LDSHARED=${LDSHARED-"$cc -shared -Wl,-soname,libz.so.1,--version-script,zlib.map"}
+        LDCONFIG="ldconfig -m" ;;
   CYGWIN* | Cygwin* | cygwin* | OS/2*)
         EXE='.exe' ;;
-  MINGW*|mingw*)
+  MINGW* | mingw*)
 # temporary bypass
         rm -f $test.[co] $test $test$shared_ext
-        echo "Please use win32/Makefile.gcc instead."
-        exit 1
+        echo "Please use win32/Makefile.gcc instead." | tee -a configure.log
+        leave 1
         LDSHARED=${LDSHARED-"$cc -shared"}
         LDSHAREDLIBC=""
         EXE='.exe' ;;
@@ -142,17 +211,25 @@
                  shared_ext='.sl'
                  SHAREDLIB='libz.sl' ;;
          esac ;;
-  Darwin*)   shared_ext='.dylib'
+  Darwin* | darwin*)
+             shared_ext='.dylib'
              SHAREDLIB=libz$shared_ext
              SHAREDLIBV=libz.$VER$shared_ext
              SHAREDLIBM=libz.$VER1$shared_ext
-             LDSHARED=${LDSHARED-"$cc -dynamiclib -install_name $libdir/$SHAREDLIBM -compatibility_version $VER1 -current_version $VER3"} ;;
+             LDSHARED=${LDSHARED-"$cc -dynamiclib -install_name $libdir/$SHAREDLIBM -compatibility_version $VER1 -current_version $VER3"}
+             if libtool -V 2>&1 | grep Apple > /dev/null; then
+                 AR="libtool"
+             else
+                 AR="/usr/bin/libtool"
+             fi
+             ARFLAGS="-o" ;;
   *)             LDSHARED=${LDSHARED-"$cc -shared"} ;;
   esac
 else
   # find system name and corresponding cc options
   CC=${CC-cc}
   gcc=0
+  echo ... using $CC >> configure.log
   if test -z "$uname"; then
     uname=`(uname -sr || echo unknown) 2>/dev/null`
   fi
@@ -183,19 +260,34 @@
              CFLAGS=${CFLAGS-"-4 -O"}
              LDSHARED=${LDSHARED-"cc"}
              RANLIB=${RANLIB-"true"}
-             AR_RC="cc -A" ;;
+             AR="cc"
+             ARFLAGS="-A" ;;
   SCO_SV\ 3.2*) SFLAGS=${CFLAGS-"-O3 -dy -KPIC "}
              CFLAGS=${CFLAGS-"-O3"}
              LDSHARED=${LDSHARED-"cc -dy -KPIC -G"} ;;
-  SunOS\ 5*) LDSHARED=${LDSHARED-"cc -G"}
-         case `(uname -m || echo unknown) 2>/dev/null` in
-         i86*)
-             SFLAGS=${CFLAGS-"-xpentium -fast -KPIC -R."}
-             CFLAGS=${CFLAGS-"-xpentium -fast"} ;;
-         *)
-             SFLAGS=${CFLAGS-"-fast -xcg92 -KPIC -R."}
-             CFLAGS=${CFLAGS-"-fast -xcg92"} ;;
-         esac ;;
+  SunOS\ 5* | solaris*)
+         LDSHARED=${LDSHARED-"cc -G -h libz$shared_ext.$VER1"}
+         SFLAGS=${CFLAGS-"-fast -KPIC"}
+         CFLAGS=${CFLAGS-"-fast"}
+         if test $build64 -eq 1; then
+             # old versions of SunPRO/Workshop/Studio don't support -m64,
+             # but newer ones do.  Check for it.
+             flag64=`$CC -flags | egrep -- '^-m64'`
+             if test x"$flag64" != x"" ; then
+                 CFLAGS="${CFLAGS} -m64"
+                 SFLAGS="${SFLAGS} -m64"
+             else
+                 case `(uname -m || echo unknown) 2>/dev/null` in
+                   i86*)
+                     SFLAGS="$SFLAGS -xarch=amd64"
+                     CFLAGS="$CFLAGS -xarch=amd64" ;;
+                   *)
+                     SFLAGS="$SFLAGS -xarch=v9"
+                     CFLAGS="$CFLAGS -xarch=v9" ;;
+                 esac
+             fi
+         fi
+         ;;
   SunOS\ 4*) SFLAGS=${CFLAGS-"-O2 -PIC"}
              CFLAGS=${CFLAGS-"-O2"}
              LDSHARED=${LDSHARED-"ld"} ;;
@@ -225,25 +317,79 @@
   esac
 fi
 
+# destination names for shared library if not defined above
 SHAREDLIB=${SHAREDLIB-"libz$shared_ext"}
 SHAREDLIBV=${SHAREDLIBV-"libz$shared_ext.$VER"}
 SHAREDLIBM=${SHAREDLIBM-"libz$shared_ext.$VER1"}
 
+echo >> configure.log
+
+# define functions for testing compiler and library characteristics and logging the results
+
+cat > $test.c <<EOF
+#error error
+EOF
+if ($CC -c $CFLAGS $test.c) 2>/dev/null; then
+  try()
+  {
+    show $*
+    test "`( $* ) 2>&1 | tee -a configure.log`" = ""
+  }
+  echo - using any output from compiler to indicate an error >> configure.log
+else
+try()
+{
+  show $*
+  ( $* ) >> configure.log 2>&1
+  ret=$?
+  if test $ret -ne 0; then
+    echo "(exit code "$ret")" >> configure.log
+  fi
+  return $ret
+}
+fi
+
+tryboth()
+{
+  show $*
+  got=`( $* ) 2>&1`
+  ret=$?
+  printf %s "$got" >> configure.log
+  if test $ret -ne 0; then
+    return $ret
+  fi
+  test "$got" = ""
+}
+
+cat > $test.c << EOF
+int foo() { return 0; }
+EOF
+echo "Checking for obsessive-compulsive compiler options..." >> configure.log
+if try $CC -c $CFLAGS $test.c; then
+  :
+else
+  echo "Compiler error reporting is too harsh for $0 (perhaps remove -Werror)." | tee -a configure.log
+  leave 1
+fi
+
+echo >> configure.log
+
+# see if shared library build supported
+cat > $test.c <<EOF
+extern int getchar();
+int hello() {return getchar();}
+EOF
 if test $shared -eq 1; then
-  echo Checking for shared library support...
+  echo Checking for shared library support... | tee -a configure.log
   # we must test in two steps (cc then ld), required at least on SunOS 4.x
-  if test "`($CC -w -c $SFLAGS $test.c) 2>&1`" = "" &&
-     test "`($LDSHARED $SFLAGS -o $test$shared_ext $test.o) 2>&1`" = ""; then
-    echo Building shared library $SHAREDLIBV with $CC.
+  if try $CC -w -c $SFLAGS $test.c &&
+     try $LDSHARED $SFLAGS -o $test$shared_ext $test.o; then
+    echo Building shared library $SHAREDLIBV with $CC. | tee -a configure.log
   elif test -z "$old_cc" -a -z "$old_cflags"; then
-    echo No shared library support.
+    echo No shared library support. | tee -a configure.log
     shared=0;
   else
-    echo Tested $CC -w -c $SFLAGS $test.c
-    $CC -w -c $SFLAGS $test.c
-    echo Tested $LDSHARED $SFLAGS -o $test$shared_ext $test.o
-    $LDSHARED $SFLAGS -o $test$shared_ext $test.o
-    echo 'No shared library support; try without defining CC and CFLAGS'
+    echo 'No shared library support; try without defining CC and CFLAGS' | tee -a configure.log
     shared=0;
   fi
 fi
@@ -254,25 +400,43 @@
   SHAREDLIB=""
   SHAREDLIBV=""
   SHAREDLIBM=""
-  echo Building static library $STATICLIB version $VER with $CC.
+  echo Building static library $STATICLIB version $VER with $CC. | tee -a configure.log
 else
   ALL="static shared"
   TEST="all teststatic testshared"
 fi
 
+# check for underscores in external names for use by assembler code
+CPP=${CPP-"$CC -E"}
+case $CFLAGS in
+  *ASMV*)
+    echo >> configure.log
+    show "$NM $test.o | grep _hello"
+    if test "`$NM $test.o | grep _hello | tee -a configure.log`" = ""; then
+      CPP="$CPP -DNO_UNDERLINE"
+      echo Checking for underline in external names... No. | tee -a configure.log
+    else
+      echo Checking for underline in external names... Yes. | tee -a configure.log
+    fi ;;
+esac
+
+echo >> configure.log
+
+# check for large file support, and if none, check for fseeko()
 cat > $test.c <<EOF
 #include <sys/types.h>
 off64_t dummy = 0;
 EOF
-if test "`($CC -c $CFLAGS -D_LARGEFILE64_SOURCE=1 $test.c) 2>&1`" = ""; then
+if try $CC -c $CFLAGS -D_LARGEFILE64_SOURCE=1 $test.c; then
   CFLAGS="${CFLAGS} -D_LARGEFILE64_SOURCE=1"
   SFLAGS="${SFLAGS} -D_LARGEFILE64_SOURCE=1"
   ALL="${ALL} all64"
   TEST="${TEST} test64"
-  echo "Checking for off64_t... Yes."
-  echo "Checking for fseeko... Yes."
+  echo "Checking for off64_t... Yes." | tee -a configure.log
+  echo "Checking for fseeko... Yes." | tee -a configure.log
 else
-  echo "Checking for off64_t... No."
+  echo "Checking for off64_t... No." | tee -a configure.log
+  echo >> configure.log
   cat > $test.c <<EOF
 #include <stdio.h>
 int main(void) {
@@ -280,272 +444,335 @@
   return 0;
 }
 EOF
-  if test "`($CC $CFLAGS -o $test $test.c) 2>&1`" = ""; then
-    echo "Checking for fseeko... Yes."
+  if try $CC $CFLAGS -o $test $test.c; then
+    echo "Checking for fseeko... Yes." | tee -a configure.log
   else
     CFLAGS="${CFLAGS} -DNO_FSEEKO"
     SFLAGS="${SFLAGS} -DNO_FSEEKO"
-    echo "Checking for fseeko... No."
+    echo "Checking for fseeko... No." | tee -a configure.log
   fi
 fi
 
+echo >> configure.log
+
+# check for strerror() for use by gz* functions
+cat > $test.c <<EOF
+#include <string.h>
+#include <errno.h>
+int main() { return strlen(strerror(errno)); }
+EOF
+if try $CC $CFLAGS -o $test $test.c; then
+  echo "Checking for strerror... Yes." | tee -a configure.log
+else
+  CFLAGS="${CFLAGS} -DNO_STRERROR"
+  SFLAGS="${SFLAGS} -DNO_STRERROR"
+  echo "Checking for strerror... No." | tee -a configure.log
+fi
+
+# copy clean zconf.h for subsequent edits
 cp -p zconf.h.in zconf.h
 
+echo >> configure.log
+
+# check for unistd.h and save result in zconf.h
 cat > $test.c <<EOF
 #include <unistd.h>
 int main() { return 0; }
 EOF
-if test "`($CC -c $CFLAGS $test.c) 2>&1`" = ""; then
+if try $CC -c $CFLAGS $test.c; then
   sed < zconf.h "/^#ifdef HAVE_UNISTD_H.* may be/s/def HAVE_UNISTD_H\(.*\) may be/ 1\1 was/" > zconf.temp.h
   mv zconf.temp.h zconf.h
-  echo "Checking for unistd.h... Yes."
+  echo "Checking for unistd.h... Yes." | tee -a configure.log
 else
-  echo "Checking for unistd.h... No."
+  echo "Checking for unistd.h... No." | tee -a configure.log
 fi
 
+echo >> configure.log
+
+# check for stdarg.h and save result in zconf.h
+cat > $test.c <<EOF
+#include <stdarg.h>
+int main() { return 0; }
+EOF
+if try $CC -c $CFLAGS $test.c; then
+  sed < zconf.h "/^#ifdef HAVE_STDARG_H.* may be/s/def HAVE_STDARG_H\(.*\) may be/ 1\1 was/" > zconf.temp.h
+  mv zconf.temp.h zconf.h
+  echo "Checking for stdarg.h... Yes." | tee -a configure.log
+else
+  echo "Checking for stdarg.h... No." | tee -a configure.log
+fi
+
+# if the z_ prefix was requested, save that in zconf.h
 if test $zprefix -eq 1; then
   sed < zconf.h "/#ifdef Z_PREFIX.* may be/s/def Z_PREFIX\(.*\) may be/ 1\1 was/" > zconf.temp.h
   mv zconf.temp.h zconf.h
-  echo "Using z_ prefix on all symbols."
+  echo >> configure.log
+  echo "Using z_ prefix on all symbols." | tee -a configure.log
 fi
 
+# if --solo compilation was requested, save that in zconf.h and remove gz stuff from object lists
+if test $solo -eq 1; then
+  sed '/#define ZCONF_H/a\
+#define Z_SOLO
+
+' < zconf.h > zconf.temp.h
+  mv zconf.temp.h zconf.h
+OBJC='$(OBJZ)'
+PIC_OBJC='$(PIC_OBJZ)'
+fi
+
+# if code coverage testing was requested, use older gcc if defined, e.g. "gcc-4.2" on Mac OS X
+if test $cover -eq 1; then
+  CFLAGS="${CFLAGS} -fprofile-arcs -ftest-coverage"
+  if test -n "$GCC_CLASSIC"; then
+    CC=$GCC_CLASSIC
+  fi
+fi
+
+echo >> configure.log
+
+# conduct a series of tests to resolve eight possible cases of using "vs" or "s" printf functions
+# (using stdarg or not), with or without "n" (proving size of buffer), and with or without a
+# return value.  The most secure result is vsnprintf() with a return value.  snprintf() with a
+# return value is secure as well, but then gzprintf() will be limited to 20 arguments.
 cat > $test.c <<EOF
 #include <stdio.h>
 #include <stdarg.h>
 #include "zconf.h"
-
 int main()
 {
 #ifndef STDC
   choke me
 #endif
-
   return 0;
 }
 EOF
+if try $CC -c $CFLAGS $test.c; then
+  echo "Checking whether to use vs[n]printf() or s[n]printf()... using vs[n]printf()." | tee -a configure.log
 
-if test "`($CC -c $CFLAGS $test.c) 2>&1`" = ""; then
-  echo "Checking whether to use vs[n]printf() or s[n]printf()... using vs[n]printf()."
-
+  echo >> configure.log
   cat > $test.c <<EOF
 #include <stdio.h>
 #include <stdarg.h>
-
 int mytest(const char *fmt, ...)
 {
   char buf[20];
   va_list ap;
-
   va_start(ap, fmt);
   vsnprintf(buf, sizeof(buf), fmt, ap);
   va_end(ap);
   return 0;
 }
+int main()
+{
+  return (mytest("Hello%d\n", 1));
+}
+EOF
+  if try $CC $CFLAGS -o $test $test.c; then
+    echo "Checking for vsnprintf() in stdio.h... Yes." | tee -a configure.log
 
+    echo >> configure.log
+    cat >$test.c <<EOF
+#include <stdio.h>
+#include <stdarg.h>
+int mytest(const char *fmt, ...)
+{
+  int n;
+  char buf[20];
+  va_list ap;
+  va_start(ap, fmt);
+  n = vsnprintf(buf, sizeof(buf), fmt, ap);
+  va_end(ap);
+  return n;
+}
 int main()
 {
   return (mytest("Hello%d\n", 1));
 }
 EOF
 
-  if test "`($CC $CFLAGS -o $test $test.c) 2>&1`" = ""; then
-    echo "Checking for vsnprintf() in stdio.h... Yes."
+    if try $CC -c $CFLAGS $test.c; then
+      echo "Checking for return value of vsnprintf()... Yes." | tee -a configure.log
+    else
+      CFLAGS="$CFLAGS -DHAS_vsnprintf_void"
+      SFLAGS="$SFLAGS -DHAS_vsnprintf_void"
+      echo "Checking for return value of vsnprintf()... No." | tee -a configure.log
+      echo "  WARNING: apparently vsnprintf() does not return a value. zlib" | tee -a configure.log
+      echo "  can build but will be open to possible string-format security" | tee -a configure.log
+      echo "  vulnerabilities." | tee -a configure.log
+    fi
+  else
+    CFLAGS="$CFLAGS -DNO_vsnprintf"
+    SFLAGS="$SFLAGS -DNO_vsnprintf"
+    echo "Checking for vsnprintf() in stdio.h... No." | tee -a configure.log
+    echo "  WARNING: vsnprintf() not found, falling back to vsprintf(). zlib" | tee -a configure.log
+    echo "  can build but will be open to possible buffer-overflow security" | tee -a configure.log
+    echo "  vulnerabilities." | tee -a configure.log
 
+    echo >> configure.log
     cat >$test.c <<EOF
 #include <stdio.h>
 #include <stdarg.h>
-
 int mytest(const char *fmt, ...)
 {
   int n;
   char buf[20];
   va_list ap;
-
   va_start(ap, fmt);
-  n = vsnprintf(buf, sizeof(buf), fmt, ap);
+  n = vsprintf(buf, fmt, ap);
   va_end(ap);
   return n;
 }
-
 int main()
 {
   return (mytest("Hello%d\n", 1));
 }
 EOF
 
-    if test "`($CC -c $CFLAGS $test.c) 2>&1`" = ""; then
-      echo "Checking for return value of vsnprintf()... Yes."
-    else
-      CFLAGS="$CFLAGS -DHAS_vsnprintf_void"
-      SFLAGS="$SFLAGS -DHAS_vsnprintf_void"
-      echo "Checking for return value of vsnprintf()... No."
-      echo "  WARNING: apparently vsnprintf() does not return a value. zlib"
-      echo "  can build but will be open to possible string-format security"
-      echo "  vulnerabilities."
-    fi
-  else
-    CFLAGS="$CFLAGS -DNO_vsnprintf"
-    SFLAGS="$SFLAGS -DNO_vsnprintf"
-    echo "Checking for vsnprintf() in stdio.h... No."
-    echo "  WARNING: vsnprintf() not found, falling back to vsprintf(). zlib"
-    echo "  can build but will be open to possible buffer-overflow security"
-    echo "  vulnerabilities."
-
-    cat >$test.c <<EOF
-#include <stdio.h>
-#include <stdarg.h>
-
-int mytest(const char *fmt, ...)
-{
-  int n;
-  char buf[20];
-  va_list ap;
-
-  va_start(ap, fmt);
-  n = vsprintf(buf, fmt, ap);
-  va_end(ap);
-  return n;
-}
-
-int main()
-{
-  return (mytest("Hello%d\n", 1));
-}
-EOF
-
-    if test "`($CC -c $CFLAGS $test.c) 2>&1`" = ""; then
-      echo "Checking for return value of vsprintf()... Yes."
+    if try $CC -c $CFLAGS $test.c; then
+      echo "Checking for return value of vsprintf()... Yes." | tee -a configure.log
     else
       CFLAGS="$CFLAGS -DHAS_vsprintf_void"
       SFLAGS="$SFLAGS -DHAS_vsprintf_void"
-      echo "Checking for return value of vsprintf()... No."
-      echo "  WARNING: apparently vsprintf() does not return a value. zlib"
-      echo "  can build but will be open to possible string-format security"
-      echo "  vulnerabilities."
+      echo "Checking for return value of vsprintf()... No." | tee -a configure.log
+      echo "  WARNING: apparently vsprintf() does not return a value. zlib" | tee -a configure.log
+      echo "  can build but will be open to possible string-format security" | tee -a configure.log
+      echo "  vulnerabilities." | tee -a configure.log
     fi
   fi
 else
-  echo "Checking whether to use vs[n]printf() or s[n]printf()... using s[n]printf()."
+  echo "Checking whether to use vs[n]printf() or s[n]printf()... using s[n]printf()." | tee -a configure.log
 
+  echo >> configure.log
   cat >$test.c <<EOF
 #include <stdio.h>
-
 int mytest()
 {
   char buf[20];
-
   snprintf(buf, sizeof(buf), "%s", "foo");
   return 0;
 }
-
 int main()
 {
   return (mytest());
 }
 EOF
 
-  if test "`($CC $CFLAGS -o $test $test.c) 2>&1`" = ""; then
-    echo "Checking for snprintf() in stdio.h... Yes."
+  if try $CC $CFLAGS -o $test $test.c; then
+    echo "Checking for snprintf() in stdio.h... Yes." | tee -a configure.log
 
+    echo >> configure.log
     cat >$test.c <<EOF
 #include <stdio.h>
-
 int mytest()
 {
   char buf[20];
-
   return snprintf(buf, sizeof(buf), "%s", "foo");
 }
-
 int main()
 {
   return (mytest());
 }
 EOF
 
-    if test "`($CC -c $CFLAGS $test.c) 2>&1`" = ""; then
-      echo "Checking for return value of snprintf()... Yes."
+    if try $CC -c $CFLAGS $test.c; then
+      echo "Checking for return value of snprintf()... Yes." | tee -a configure.log
     else
       CFLAGS="$CFLAGS -DHAS_snprintf_void"
       SFLAGS="$SFLAGS -DHAS_snprintf_void"
-      echo "Checking for return value of snprintf()... No."
-      echo "  WARNING: apparently snprintf() does not return a value. zlib"
-      echo "  can build but will be open to possible string-format security"
-      echo "  vulnerabilities."
+      echo "Checking for return value of snprintf()... No." | tee -a configure.log
+      echo "  WARNING: apparently snprintf() does not return a value. zlib" | tee -a configure.log
+      echo "  can build but will be open to possible string-format security" | tee -a configure.log
+      echo "  vulnerabilities." | tee -a configure.log
     fi
   else
     CFLAGS="$CFLAGS -DNO_snprintf"
     SFLAGS="$SFLAGS -DNO_snprintf"
-    echo "Checking for snprintf() in stdio.h... No."
-    echo "  WARNING: snprintf() not found, falling back to sprintf(). zlib"
-    echo "  can build but will be open to possible buffer-overflow security"
-    echo "  vulnerabilities."
+    echo "Checking for snprintf() in stdio.h... No." | tee -a configure.log
+    echo "  WARNING: snprintf() not found, falling back to sprintf(). zlib" | tee -a configure.log
+    echo "  can build but will be open to possible buffer-overflow security" | tee -a configure.log
+    echo "  vulnerabilities." | tee -a configure.log
 
+    echo >> configure.log
     cat >$test.c <<EOF
 #include <stdio.h>
-
 int mytest()
 {
   char buf[20];
-
   return sprintf(buf, "%s", "foo");
 }
-
 int main()
 {
   return (mytest());
 }
 EOF
 
-    if test "`($CC -c $CFLAGS $test.c) 2>&1`" = ""; then
-      echo "Checking for return value of sprintf()... Yes."
+    if try $CC -c $CFLAGS $test.c; then
+      echo "Checking for return value of sprintf()... Yes." | tee -a configure.log
     else
       CFLAGS="$CFLAGS -DHAS_sprintf_void"
       SFLAGS="$SFLAGS -DHAS_sprintf_void"
-      echo "Checking for return value of sprintf()... No."
-      echo "  WARNING: apparently sprintf() does not return a value. zlib"
-      echo "  can build but will be open to possible string-format security"
-      echo "  vulnerabilities."
+      echo "Checking for return value of sprintf()... No." | tee -a configure.log
+      echo "  WARNING: apparently sprintf() does not return a value. zlib" | tee -a configure.log
+      echo "  can build but will be open to possible string-format security" | tee -a configure.log
+      echo "  vulnerabilities." | tee -a configure.log
     fi
   fi
 fi
 
+# see if we can hide zlib internal symbols that are linked between separate source files
 if test "$gcc" -eq 1; then
+  echo >> configure.log
   cat > $test.c <<EOF
-#if ((__GNUC__-0) * 10 + __GNUC_MINOR__-0 >= 33)
-#  define ZLIB_INTERNAL __attribute__((visibility ("hidden")))
-#else
-#  define ZLIB_INTERNAL
-#endif
+#define ZLIB_INTERNAL __attribute__((visibility ("hidden")))
 int ZLIB_INTERNAL foo;
 int main()
 {
   return 0;
 }
 EOF
-  if test "`($CC -c $CFLAGS $test.c) 2>&1`" = ""; then
-    echo "Checking for attribute(visibility) support... Yes."
+  if tryboth $CC -c $CFLAGS $test.c; then
+    CFLAGS="$CFLAGS -DHAVE_HIDDEN"
+    SFLAGS="$SFLAGS -DHAVE_HIDDEN"
+    echo "Checking for attribute(visibility) support... Yes." | tee -a configure.log
   else
-    CFLAGS="$CFLAGS -DNO_VIZ"
-    SFLAGS="$SFLAGS -DNO_VIZ"
-    echo "Checking for attribute(visibility) support... No."
+    echo "Checking for attribute(visibility) support... No." | tee -a configure.log
   fi
 fi
 
-CPP=${CPP-"$CC -E"}
-case $CFLAGS in
-  *ASMV*)
-    if test "`$NM $test.o | grep _hello`" = ""; then
-      CPP="$CPP -DNO_UNDERLINE"
-      echo Checking for underline in external names... No.
-    else
-      echo Checking for underline in external names... Yes.
-    fi ;;
-esac
+# show the results in the log
+echo >> configure.log
+echo ALL = $ALL >> configure.log
+echo AR = $AR >> configure.log
+echo ARFLAGS = $ARFLAGS >> configure.log
+echo CC = $CC >> configure.log
+echo CFLAGS = $CFLAGS >> configure.log
+echo CPP = $CPP >> configure.log
+echo EXE = $EXE >> configure.log
+echo LDCONFIG = $LDCONFIG >> configure.log
+echo LDFLAGS = $LDFLAGS >> configure.log
+echo LDSHARED = $LDSHARED >> configure.log
+echo LDSHAREDLIBC = $LDSHAREDLIBC >> configure.log
+echo OBJC = $OBJC >> configure.log
+echo PIC_OBJC = $PIC_OBJC >> configure.log
+echo RANLIB = $RANLIB >> configure.log
+echo SFLAGS = $SFLAGS >> configure.log
+echo SHAREDLIB = $SHAREDLIB >> configure.log
+echo SHAREDLIBM = $SHAREDLIBM >> configure.log
+echo SHAREDLIBV = $SHAREDLIBV >> configure.log
+echo STATICLIB = $STATICLIB >> configure.log
+echo TEST = $TEST >> configure.log
+echo VER = $VER >> configure.log
+echo Z_U4 = $Z_U4 >> configure.log
+echo exec_prefix = $exec_prefix >> configure.log
+echo includedir = $includedir >> configure.log
+echo libdir = $libdir >> configure.log
+echo mandir = $mandir >> configure.log
+echo prefix = $prefix >> configure.log
+echo sharedlibdir = $sharedlibdir >> configure.log
+echo uname = $uname >> configure.log
 
-rm -f $test.[co] $test $test$shared_ext
-
-# udpate Makefile
+# udpate Makefile with the configure results
 sed < Makefile.in "
 /^CC *=/s#=.*#=$CC#
 /^CFLAGS *=/s#=.*#=$CFLAGS#
@@ -557,7 +784,8 @@
 /^SHAREDLIB *=/s#=.*#=$SHAREDLIB#
 /^SHAREDLIBV *=/s#=.*#=$SHAREDLIBV#
 /^SHAREDLIBM *=/s#=.*#=$SHAREDLIBM#
-/^AR *=/s#=.*#=$AR_RC#
+/^AR *=/s#=.*#=$AR#
+/^ARFLAGS *=/s#=.*#=$ARFLAGS#
 /^RANLIB *=/s#=.*#=$RANLIB#
 /^LDCONFIG *=/s#=.*#=$LDCONFIG#
 /^LDSHAREDLIBC *=/s#=.*#=$LDSHAREDLIBC#
@@ -568,10 +796,13 @@
 /^sharedlibdir *=/s#=.*#=$sharedlibdir#
 /^includedir *=/s#=.*#=$includedir#
 /^mandir *=/s#=.*#=$mandir#
+/^OBJC *=/s#=.*#= $OBJC#
+/^PIC_OBJC *=/s#=.*#= $PIC_OBJC#
 /^all: */s#:.*#: $ALL#
 /^test: */s#:.*#: $TEST#
 " > Makefile
 
+# create zlib.pc with the configure results
 sed < zlib.pc.in "
 /^CC *=/s#=.*#=$CC#
 /^CFLAGS *=/s#=.*#=$CFLAGS#
@@ -581,7 +812,8 @@
 /^SHAREDLIB *=/s#=.*#=$SHAREDLIB#
 /^SHAREDLIBV *=/s#=.*#=$SHAREDLIBV#
 /^SHAREDLIBM *=/s#=.*#=$SHAREDLIBM#
-/^AR *=/s#=.*#=$AR_RC#
+/^AR *=/s#=.*#=$AR#
+/^ARFLAGS *=/s#=.*#=$ARFLAGS#
 /^RANLIB *=/s#=.*#=$RANLIB#
 /^EXE *=/s#=.*#=$EXE#
 /^prefix *=/s#=.*#=$prefix#
@@ -594,3 +826,6 @@
 " | sed -e "
 s/\@VERSION\@/$VER/g;
 " > zlib.pc
+
+# done
+leave 0
diff --git a/Modules/zlib/crc32.c b/Modules/zlib/crc32.c
--- a/Modules/zlib/crc32.c
+++ b/Modules/zlib/crc32.c
@@ -1,5 +1,5 @@
 /* crc32.c -- compute the CRC-32 of a data stream
- * Copyright (C) 1995-2006, 2010 Mark Adler
+ * Copyright (C) 1995-2006, 2010, 2011, 2012 Mark Adler
  * For conditions of distribution and use, see copyright notice in zlib.h
  *
  * Thanks to Rodney Brown <rbrown64 at csc.com.au> for his contribution of faster
@@ -17,6 +17,8 @@
   of the crc tables.  Therefore, if you #define DYNAMIC_CRC_TABLE, you should
   first call get_crc_table() to initialize the tables before allowing more than
   one thread to use crc32().
+
+  DYNAMIC_CRC_TABLE and MAKECRCH can be #defined to write out crc32.h.
  */
 
 #ifdef MAKECRCH
@@ -30,31 +32,11 @@
 
 #define local static
 
-/* Find a four-byte integer type for crc32_little() and crc32_big(). */
-#ifndef NOBYFOUR
-#  ifdef STDC           /* need ANSI C limits.h to determine sizes */
-#    include <limits.h>
-#    define BYFOUR
-#    if (UINT_MAX == 0xffffffffUL)
-       typedef unsigned int u4;
-#    else
-#      if (ULONG_MAX == 0xffffffffUL)
-         typedef unsigned long u4;
-#      else
-#        if (USHRT_MAX == 0xffffffffUL)
-           typedef unsigned short u4;
-#        else
-#          undef BYFOUR     /* can't find a four-byte integer type! */
-#        endif
-#      endif
-#    endif
-#  endif /* STDC */
-#endif /* !NOBYFOUR */
-
 /* Definitions for doing the crc four data bytes at a time. */
+#if !defined(NOBYFOUR) && defined(Z_U4)
+#  define BYFOUR
+#endif
 #ifdef BYFOUR
-#  define REV(w) ((((w)>>24)&0xff)+(((w)>>8)&0xff00)+ \
-                (((w)&0xff00)<<8)+(((w)&0xff)<<24))
    local unsigned long crc32_little OF((unsigned long,
                         const unsigned char FAR *, unsigned));
    local unsigned long crc32_big OF((unsigned long,
@@ -68,16 +50,16 @@
 local unsigned long gf2_matrix_times OF((unsigned long *mat,
                                          unsigned long vec));
 local void gf2_matrix_square OF((unsigned long *square, unsigned long *mat));
-local uLong crc32_combine_(uLong crc1, uLong crc2, z_off64_t len2);
+local uLong crc32_combine_ OF((uLong crc1, uLong crc2, z_off64_t len2));
 
 
 #ifdef DYNAMIC_CRC_TABLE
 
 local volatile int crc_table_empty = 1;
-local unsigned long FAR crc_table[TBLS][256];
+local z_crc_t FAR crc_table[TBLS][256];
 local void make_crc_table OF((void));
 #ifdef MAKECRCH
-   local void write_table OF((FILE *, const unsigned long FAR *));
+   local void write_table OF((FILE *, const z_crc_t FAR *));
 #endif /* MAKECRCH */
 /*
   Generate tables for a byte-wise 32-bit CRC calculation on the polynomial:
@@ -107,9 +89,9 @@
 */
 local void make_crc_table()
 {
-    unsigned long c;
+    z_crc_t c;
     int n, k;
-    unsigned long poly;                 /* polynomial exclusive-or pattern */
+    z_crc_t poly;                       /* polynomial exclusive-or pattern */
     /* terms of polynomial defining this crc (except x^32): */
     static volatile int first = 1;      /* flag to limit concurrent making */
     static const unsigned char p[] = {0,1,2,4,5,7,8,10,11,12,16,22,23,26};
@@ -121,13 +103,13 @@
         first = 0;
 
         /* make exclusive-or pattern from polynomial (0xedb88320UL) */
-        poly = 0UL;
-        for (n = 0; n < sizeof(p)/sizeof(unsigned char); n++)
-            poly |= 1UL << (31 - p[n]);
+        poly = 0;
+        for (n = 0; n < (int)(sizeof(p)/sizeof(unsigned char)); n++)
+            poly |= (z_crc_t)1 << (31 - p[n]);
 
         /* generate a crc for every 8-bit value */
         for (n = 0; n < 256; n++) {
-            c = (unsigned long)n;
+            c = (z_crc_t)n;
             for (k = 0; k < 8; k++)
                 c = c & 1 ? poly ^ (c >> 1) : c >> 1;
             crc_table[0][n] = c;
@@ -138,11 +120,11 @@
            and then the byte reversal of those as well as the first table */
         for (n = 0; n < 256; n++) {
             c = crc_table[0][n];
-            crc_table[4][n] = REV(c);
+            crc_table[4][n] = ZSWAP32(c);
             for (k = 1; k < 4; k++) {
                 c = crc_table[0][c & 0xff] ^ (c >> 8);
                 crc_table[k][n] = c;
-                crc_table[k + 4][n] = REV(c);
+                crc_table[k + 4][n] = ZSWAP32(c);
             }
         }
 #endif /* BYFOUR */
@@ -164,7 +146,7 @@
         if (out == NULL) return;
         fprintf(out, "/* crc32.h -- tables for rapid CRC calculation\n");
         fprintf(out, " * Generated automatically by crc32.c\n */\n\n");
-        fprintf(out, "local const unsigned long FAR ");
+        fprintf(out, "local const z_crc_t FAR ");
         fprintf(out, "crc_table[TBLS][256] =\n{\n  {\n");
         write_table(out, crc_table[0]);
 #  ifdef BYFOUR
@@ -184,12 +166,13 @@
 #ifdef MAKECRCH
 local void write_table(out, table)
     FILE *out;
-    const unsigned long FAR *table;
+    const z_crc_t FAR *table;
 {
     int n;
 
     for (n = 0; n < 256; n++)
-        fprintf(out, "%s0x%08lxUL%s", n % 5 ? "" : "    ", table[n],
+        fprintf(out, "%s0x%08lxUL%s", n % 5 ? "" : "    ",
+                (unsigned long)(table[n]),
                 n == 255 ? "\n" : (n % 5 == 4 ? ",\n" : ", "));
 }
 #endif /* MAKECRCH */
@@ -204,13 +187,13 @@
 /* =========================================================================
  * This function can be used by asm versions of crc32()
  */
-const unsigned long FAR * ZEXPORT get_crc_table()
+const z_crc_t FAR * ZEXPORT get_crc_table()
 {
 #ifdef DYNAMIC_CRC_TABLE
     if (crc_table_empty)
         make_crc_table();
 #endif /* DYNAMIC_CRC_TABLE */
-    return (const unsigned long FAR *)crc_table;
+    return (const z_crc_t FAR *)crc_table;
 }
 
 /* ========================================================================= */
@@ -232,7 +215,7 @@
 
 #ifdef BYFOUR
     if (sizeof(void *) == sizeof(ptrdiff_t)) {
-        u4 endian;
+        z_crc_t endian;
 
         endian = 1;
         if (*((unsigned char *)(&endian)))
@@ -266,17 +249,17 @@
     const unsigned char FAR *buf;
     unsigned len;
 {
-    register u4 c;
-    register const u4 FAR *buf4;
+    register z_crc_t c;
+    register const z_crc_t FAR *buf4;
 
-    c = (u4)crc;
+    c = (z_crc_t)crc;
     c = ~c;
     while (len && ((ptrdiff_t)buf & 3)) {
         c = crc_table[0][(c ^ *buf++) & 0xff] ^ (c >> 8);
         len--;
     }
 
-    buf4 = (const u4 FAR *)(const void FAR *)buf;
+    buf4 = (const z_crc_t FAR *)(const void FAR *)buf;
     while (len >= 32) {
         DOLIT32;
         len -= 32;
@@ -306,17 +289,17 @@
     const unsigned char FAR *buf;
     unsigned len;
 {
-    register u4 c;
-    register const u4 FAR *buf4;
+    register z_crc_t c;
+    register const z_crc_t FAR *buf4;
 
-    c = REV((u4)crc);
+    c = ZSWAP32((z_crc_t)crc);
     c = ~c;
     while (len && ((ptrdiff_t)buf & 3)) {
         c = crc_table[4][(c >> 24) ^ *buf++] ^ (c << 8);
         len--;
     }
 
-    buf4 = (const u4 FAR *)(const void FAR *)buf;
+    buf4 = (const z_crc_t FAR *)(const void FAR *)buf;
     buf4--;
     while (len >= 32) {
         DOBIG32;
@@ -333,7 +316,7 @@
         c = crc_table[4][(c >> 24) ^ *buf++] ^ (c << 8);
     } while (--len);
     c = ~c;
-    return (unsigned long)(REV(c));
+    return (unsigned long)(ZSWAP32(c));
 }
 
 #endif /* BYFOUR */
diff --git a/Modules/zlib/crc32.h b/Modules/zlib/crc32.h
--- a/Modules/zlib/crc32.h
+++ b/Modules/zlib/crc32.h
@@ -2,7 +2,7 @@
  * Generated automatically by crc32.c
  */
 
-local const unsigned long FAR crc_table[TBLS][256] =
+local const z_crc_t FAR crc_table[TBLS][256] =
 {
   {
     0x00000000UL, 0x77073096UL, 0xee0e612cUL, 0x990951baUL, 0x076dc419UL,
diff --git a/Modules/zlib/deflate.c b/Modules/zlib/deflate.c
--- a/Modules/zlib/deflate.c
+++ b/Modules/zlib/deflate.c
@@ -1,5 +1,5 @@
 /* deflate.c -- compress data using the deflation algorithm
- * Copyright (C) 1995-2010 Jean-loup Gailly and Mark Adler
+ * Copyright (C) 1995-2013 Jean-loup Gailly and Mark Adler
  * For conditions of distribution and use, see copyright notice in zlib.h
  */
 
@@ -37,7 +37,7 @@
  *  REFERENCES
  *
  *      Deutsch, L.P.,"DEFLATE Compressed Data Format Specification".
- *      Available in http://www.ietf.org/rfc/rfc1951.txt
+ *      Available in http://tools.ietf.org/html/rfc1951
  *
  *      A description of the Rabin and Karp algorithm is given in the book
  *         "Algorithms" by R. Sedgewick, Addison-Wesley, p252.
@@ -52,7 +52,7 @@
 #include "deflate.h"
 
 const char deflate_copyright[] =
-   " deflate 1.2.5 Copyright 1995-2010 Jean-loup Gailly and Mark Adler ";
+   " deflate 1.2.8 Copyright 1995-2013 Jean-loup Gailly and Mark Adler ";
 /*
   If you use the zlib library in a product, an acknowledgment is welcome
   in the documentation of your product. If for some reason you cannot
@@ -155,9 +155,12 @@
 struct static_tree_desc_s {int dummy;}; /* for buggy compilers */
 #endif
 
+/* rank Z_BLOCK between Z_NO_FLUSH and Z_PARTIAL_FLUSH */
+#define RANK(f) (((f) << 1) - ((f) > 4 ? 9 : 0))
+
 /* ===========================================================================
  * Update a hash value with the given input byte
- * IN  assertion: all calls to UPDATE_HASH are made with consecutive
+ * IN  assertion: all calls to to UPDATE_HASH are made with consecutive
  *    input characters, so that a running hash key can be computed from the
  *    previous key instead of complete recalculation each time.
  */
@@ -170,7 +173,7 @@
  * the previous length of the hash chain.
  * If this file is compiled with -DFASTEST, the compression level is forced
  * to 1, and no hash chains are maintained.
- * IN  assertion: all calls to INSERT_STRING are made with consecutive
+ * IN  assertion: all calls to to INSERT_STRING are made with consecutive
  *    input characters and the first MIN_MATCH bytes of str are valid
  *    (except for the last MIN_MATCH-1 bytes of the input file).
  */
@@ -235,10 +238,19 @@
 
     strm->msg = Z_NULL;
     if (strm->zalloc == (alloc_func)0) {
+#ifdef Z_SOLO
+        return Z_STREAM_ERROR;
+#else
         strm->zalloc = zcalloc;
         strm->opaque = (voidpf)0;
+#endif
     }
-    if (strm->zfree == (free_func)0) strm->zfree = zcfree;
+    if (strm->zfree == (free_func)0)
+#ifdef Z_SOLO
+        return Z_STREAM_ERROR;
+#else
+        strm->zfree = zcfree;
+#endif
 
 #ifdef FASTEST
     if (level != 0) level = 1;
@@ -293,7 +305,7 @@
     if (s->window == Z_NULL || s->prev == Z_NULL || s->head == Z_NULL ||
         s->pending_buf == Z_NULL) {
         s->status = FINISH_STATE;
-        strm->msg = (char*)ERR_MSG(Z_MEM_ERROR);
+        strm->msg = ERR_MSG(Z_MEM_ERROR);
         deflateEnd (strm);
         return Z_MEM_ERROR;
     }
@@ -314,43 +326,70 @@
     uInt  dictLength;
 {
     deflate_state *s;
-    uInt length = dictLength;
-    uInt n;
-    IPos hash_head = 0;
+    uInt str, n;
+    int wrap;
+    unsigned avail;
+    z_const unsigned char *next;
 
-    if (strm == Z_NULL || strm->state == Z_NULL || dictionary == Z_NULL ||
-        strm->state->wrap == 2 ||
-        (strm->state->wrap == 1 && strm->state->status != INIT_STATE))
+    if (strm == Z_NULL || strm->state == Z_NULL || dictionary == Z_NULL)
+        return Z_STREAM_ERROR;
+    s = strm->state;
+    wrap = s->wrap;
+    if (wrap == 2 || (wrap == 1 && s->status != INIT_STATE) || s->lookahead)
         return Z_STREAM_ERROR;
 
-    s = strm->state;
-    if (s->wrap)
+    /* when using zlib wrappers, compute Adler-32 for provided dictionary */
+    if (wrap == 1)
         strm->adler = adler32(strm->adler, dictionary, dictLength);
+    s->wrap = 0;                    /* avoid computing Adler-32 in read_buf */
 
-    if (length < MIN_MATCH) return Z_OK;
-    if (length > s->w_size) {
-        length = s->w_size;
-        dictionary += dictLength - length; /* use the tail of the dictionary */
+    /* if dictionary would fill window, just replace the history */
+    if (dictLength >= s->w_size) {
+        if (wrap == 0) {            /* already empty otherwise */
+            CLEAR_HASH(s);
+            s->strstart = 0;
+            s->block_start = 0L;
+            s->insert = 0;
+        }
+        dictionary += dictLength - s->w_size;  /* use the tail */
+        dictLength = s->w_size;
     }
-    zmemcpy(s->window, dictionary, length);
-    s->strstart = length;
-    s->block_start = (long)length;
 
-    /* Insert all strings in the hash table (except for the last two bytes).
-     * s->lookahead stays null, so s->ins_h will be recomputed at the next
-     * call of fill_window.
-     */
-    s->ins_h = s->window[0];
-    UPDATE_HASH(s, s->ins_h, s->window[1]);
-    for (n = 0; n <= length - MIN_MATCH; n++) {
-        INSERT_STRING(s, n, hash_head);
+    /* insert dictionary into window and hash */
+    avail = strm->avail_in;
+    next = strm->next_in;
+    strm->avail_in = dictLength;
+    strm->next_in = (z_const Bytef *)dictionary;
+    fill_window(s);
+    while (s->lookahead >= MIN_MATCH) {
+        str = s->strstart;
+        n = s->lookahead - (MIN_MATCH-1);
+        do {
+            UPDATE_HASH(s, s->ins_h, s->window[str + MIN_MATCH-1]);
+#ifndef FASTEST
+            s->prev[str & s->w_mask] = s->head[s->ins_h];
+#endif
+            s->head[s->ins_h] = (Pos)str;
+            str++;
+        } while (--n);
+        s->strstart = str;
+        s->lookahead = MIN_MATCH-1;
+        fill_window(s);
     }
-    if (hash_head) hash_head = 0;  /* to make compiler happy */
+    s->strstart += s->lookahead;
+    s->block_start = (long)s->strstart;
+    s->insert = s->lookahead;
+    s->lookahead = 0;
+    s->match_length = s->prev_length = MIN_MATCH-1;
+    s->match_available = 0;
+    strm->next_in = next;
+    strm->avail_in = avail;
+    s->wrap = wrap;
     return Z_OK;
 }
 
 /* ========================================================================= */
-int ZEXPORT deflateReset (strm)
+int ZEXPORT deflateResetKeep (strm)
     z_streamp strm;
 {
     deflate_state *s;
@@ -380,12 +419,23 @@
     s->last_flush = Z_NO_FLUSH;
 
     _tr_init(s);
-    lm_init(s);
 
     return Z_OK;
 }
 
 /* ========================================================================= */
+int ZEXPORT deflateReset (strm)
+    z_streamp strm;
+{
+    int ret;
+
+    ret = deflateResetKeep(strm);
+    if (ret == Z_OK)
+        lm_init(strm->state);
+    return ret;
+}
+
+/* ========================================================================= */
 int ZEXPORT deflateSetHeader (strm, head)
     z_streamp strm;
     gz_headerp head;
@@ -397,14 +447,42 @@
 }
 
 /* ========================================================================= */
+int ZEXPORT deflatePending (strm, pending, bits)
+    unsigned *pending;
+    int *bits;
+    z_streamp strm;
+{
+    if (strm == Z_NULL || strm->state == Z_NULL) return Z_STREAM_ERROR;
+    if (pending != Z_NULL)
+        *pending = strm->state->pending;
+    if (bits != Z_NULL)
+        *bits = strm->state->bi_valid;
+    return Z_OK;
+}
+
+/* ========================================================================= */
 int ZEXPORT deflatePrime (strm, bits, value)
     z_streamp strm;
     int bits;
     int value;
 {
+    deflate_state *s;
+    int put;
+
     if (strm == Z_NULL || strm->state == Z_NULL) return Z_STREAM_ERROR;
-    strm->state->bi_valid = bits;
-    strm->state->bi_buf = (ush)(value & ((1 << bits) - 1));
+    s = strm->state;
+    if ((Bytef *)(s->d_buf) < s->pending_out + ((Buf_size + 7) >> 3))
+        return Z_BUF_ERROR;
+    do {
+        put = Buf_size - s->bi_valid;
+        if (put > bits)
+            put = bits;
+        s->bi_buf |= (ush)((value & ((1 << put) - 1)) << s->bi_valid);
+        s->bi_valid += put;
+        _tr_flush_bits(s);
+        value >>= put;
+        bits -= put;
+    } while (bits);
     return Z_OK;
 }
 
@@ -435,6 +513,8 @@
         strm->total_in != 0) {
         /* Flush the last buffer: */
         err = deflate(strm, Z_BLOCK);
+        if (err == Z_BUF_ERROR && s->pending == 0)
+            err = Z_OK;
     }
     if (s->level != level) {
         s->level = level;
@@ -562,19 +642,22 @@
 local void flush_pending(strm)
     z_streamp strm;
 {
-    unsigned len = strm->state->pending;
+    unsigned len;
+    deflate_state *s = strm->state;
 
+    _tr_flush_bits(s);
+    len = s->pending;
     if (len > strm->avail_out) len = strm->avail_out;
     if (len == 0) return;
 
-    zmemcpy(strm->next_out, strm->state->pending_out, len);
+    zmemcpy(strm->next_out, s->pending_out, len);
     strm->next_out  += len;
-    strm->state->pending_out  += len;
+    s->pending_out  += len;
     strm->total_out += len;
     strm->avail_out  -= len;
-    strm->state->pending -= len;
-    if (strm->state->pending == 0) {
-        strm->state->pending_out = strm->state->pending_buf;
+    s->pending -= len;
+    if (s->pending == 0) {
+        s->pending_out = s->pending_buf;
     }
 }
 
@@ -801,7 +884,7 @@
      * flushes. For repeated and useless calls with Z_FINISH, we keep
      * returning Z_STREAM_END instead of Z_BUF_ERROR.
      */
-    } else if (strm->avail_in == 0 && flush <= old_flush &&
+    } else if (strm->avail_in == 0 && RANK(flush) <= RANK(old_flush) &&
                flush != Z_FINISH) {
         ERR_RETURN(strm, Z_BUF_ERROR);
     }
@@ -850,6 +933,7 @@
                     if (s->lookahead == 0) {
                         s->strstart = 0;
                         s->block_start = 0L;
+                        s->insert = 0;
                     }
                 }
             }
@@ -945,12 +1029,12 @@
 
     ss = source->state;
 
-    zmemcpy(dest, source, sizeof(z_stream));
+    zmemcpy((voidpf)dest, (voidpf)source, sizeof(z_stream));
 
     ds = (deflate_state *) ZALLOC(dest, 1, sizeof(deflate_state));
     if (ds == Z_NULL) return Z_MEM_ERROR;
     dest->state = (struct internal_state FAR *) ds;
-    zmemcpy(ds, ss, sizeof(deflate_state));
+    zmemcpy((voidpf)ds, (voidpf)ss, sizeof(deflate_state));
     ds->strm = dest;
 
     ds->window = (Bytef *) ZALLOC(dest, ds->w_size, 2*sizeof(Byte));
@@ -966,8 +1050,8 @@
     }
     /* following zmemcpy do not work for 16-bit MSDOS */
     zmemcpy(ds->window, ss->window, ds->w_size * 2 * sizeof(Byte));
-    zmemcpy(ds->prev, ss->prev, ds->w_size * sizeof(Pos));
-    zmemcpy(ds->head, ss->head, ds->hash_size * sizeof(Pos));
+    zmemcpy((voidpf)ds->prev, (voidpf)ss->prev, ds->w_size * sizeof(Pos));
+    zmemcpy((voidpf)ds->head, (voidpf)ss->head, ds->hash_size * sizeof(Pos));
     zmemcpy(ds->pending_buf, ss->pending_buf, (uInt)ds->pending_buf_size);
 
     ds->pending_out = ds->pending_buf + (ss->pending_out - ss->pending_buf);
@@ -1001,15 +1085,15 @@
 
     strm->avail_in  -= len;
 
+    zmemcpy(buf, strm->next_in, len);
     if (strm->state->wrap == 1) {
-        strm->adler = adler32(strm->adler, strm->next_in, len);
+        strm->adler = adler32(strm->adler, buf, len);
     }
 #ifdef GZIP
     else if (strm->state->wrap == 2) {
-        strm->adler = crc32(strm->adler, strm->next_in, len);
+        strm->adler = crc32(strm->adler, buf, len);
     }
 #endif
-    zmemcpy(buf, strm->next_in, len);
     strm->next_in  += len;
     strm->total_in += len;
 
@@ -1036,6 +1120,7 @@
     s->strstart = 0;
     s->block_start = 0L;
     s->lookahead = 0;
+    s->insert = 0;
     s->match_length = s->prev_length = MIN_MATCH-1;
     s->match_available = 0;
     s->ins_h = 0;
@@ -1310,6 +1395,8 @@
     unsigned more;    /* Amount of free space at the end of the window. */
     uInt wsize = s->w_size;
 
+    Assert(s->lookahead < MIN_LOOKAHEAD, "already enough lookahead");
+
     do {
         more = (unsigned)(s->window_size -(ulg)s->lookahead -(ulg)s->strstart);
 
@@ -1362,7 +1449,7 @@
 #endif
             more += wsize;
         }
-        if (s->strm->avail_in == 0) return;
+        if (s->strm->avail_in == 0) break;
 
         /* If there was no sliding:
          *    strstart <= WSIZE+MAX_DIST-1 && lookahead <= MIN_LOOKAHEAD - 1 &&
@@ -1381,12 +1468,24 @@
         s->lookahead += n;
 
         /* Initialize the hash value now that we have some input: */
-        if (s->lookahead >= MIN_MATCH) {
-            s->ins_h = s->window[s->strstart];
-            UPDATE_HASH(s, s->ins_h, s->window[s->strstart+1]);
+        if (s->lookahead + s->insert >= MIN_MATCH) {
+            uInt str = s->strstart - s->insert;
+            s->ins_h = s->window[str];
+            UPDATE_HASH(s, s->ins_h, s->window[str + 1]);
 #if MIN_MATCH != 3
             Call UPDATE_HASH() MIN_MATCH-3 more times
 #endif
+            while (s->insert) {
+                UPDATE_HASH(s, s->ins_h, s->window[str + MIN_MATCH-1]);
+#ifndef FASTEST
+                s->prev[str & s->w_mask] = s->head[s->ins_h];
+#endif
+                s->head[s->ins_h] = (Pos)str;
+                str++;
+                s->insert--;
+                if (s->lookahead + s->insert < MIN_MATCH)
+                    break;
+            }
         }
         /* If the whole input has less than MIN_MATCH bytes, ins_h is garbage,
          * but this is not important since only literal bytes will be emitted.
@@ -1427,6 +1526,9 @@
             s->high_water += init;
         }
     }
+
+    Assert((ulg)s->strstart <= s->window_size - MIN_LOOKAHEAD,
+           "not enough room for search");
 }
 
 /* ===========================================================================
@@ -1506,8 +1608,14 @@
             FLUSH_BLOCK(s, 0);
         }
     }
-    FLUSH_BLOCK(s, flush == Z_FINISH);
-    return flush == Z_FINISH ? finish_done : block_done;
+    s->insert = 0;
+    if (flush == Z_FINISH) {
+        FLUSH_BLOCK(s, 1);
+        return finish_done;
+    }
+    if ((long)s->strstart > s->block_start)
+        FLUSH_BLOCK(s, 0);
+    return block_done;
 }
 
 /* ===========================================================================
@@ -1603,8 +1711,14 @@
         }
         if (bflush) FLUSH_BLOCK(s, 0);
     }
-    FLUSH_BLOCK(s, flush == Z_FINISH);
-    return flush == Z_FINISH ? finish_done : block_done;
+    s->insert = s->strstart < MIN_MATCH-1 ? s->strstart : MIN_MATCH-1;
+    if (flush == Z_FINISH) {
+        FLUSH_BLOCK(s, 1);
+        return finish_done;
+    }
+    if (s->last_lit)
+        FLUSH_BLOCK(s, 0);
+    return block_done;
 }
 
 #ifndef FASTEST
@@ -1728,8 +1842,14 @@
         _tr_tally_lit(s, s->window[s->strstart-1], bflush);
         s->match_available = 0;
     }
-    FLUSH_BLOCK(s, flush == Z_FINISH);
-    return flush == Z_FINISH ? finish_done : block_done;
+    s->insert = s->strstart < MIN_MATCH-1 ? s->strstart : MIN_MATCH-1;
+    if (flush == Z_FINISH) {
+        FLUSH_BLOCK(s, 1);
+        return finish_done;
+    }
+    if (s->last_lit)
+        FLUSH_BLOCK(s, 0);
+    return block_done;
 }
 #endif /* FASTEST */
 
@@ -1749,11 +1869,11 @@
     for (;;) {
         /* Make sure that we always have enough lookahead, except
          * at the end of the input file. We need MAX_MATCH bytes
-         * for the longest encodable run.
+         * for the longest run, plus one for the unrolled loop.
          */
-        if (s->lookahead < MAX_MATCH) {
+        if (s->lookahead <= MAX_MATCH) {
             fill_window(s);
-            if (s->lookahead < MAX_MATCH && flush == Z_NO_FLUSH) {
+            if (s->lookahead <= MAX_MATCH && flush == Z_NO_FLUSH) {
                 return need_more;
             }
             if (s->lookahead == 0) break; /* flush the current block */
@@ -1776,6 +1896,7 @@
                 if (s->match_length > s->lookahead)
                     s->match_length = s->lookahead;
             }
+            Assert(scan <= s->window+(uInt)(s->window_size-1), "wild scan");
         }
 
         /* Emit match if have run of MIN_MATCH or longer, else emit literal */
@@ -1796,8 +1917,14 @@
         }
         if (bflush) FLUSH_BLOCK(s, 0);
     }
-    FLUSH_BLOCK(s, flush == Z_FINISH);
-    return flush == Z_FINISH ? finish_done : block_done;
+    s->insert = 0;
+    if (flush == Z_FINISH) {
+        FLUSH_BLOCK(s, 1);
+        return finish_done;
+    }
+    if (s->last_lit)
+        FLUSH_BLOCK(s, 0);
+    return block_done;
 }
 
 /* ===========================================================================
@@ -1829,6 +1956,12 @@
         s->strstart++;
         if (bflush) FLUSH_BLOCK(s, 0);
     }
-    FLUSH_BLOCK(s, flush == Z_FINISH);
-    return flush == Z_FINISH ? finish_done : block_done;
+    s->insert = 0;
+    if (flush == Z_FINISH) {
+        FLUSH_BLOCK(s, 1);
+        return finish_done;
+    }
+    if (s->last_lit)
+        FLUSH_BLOCK(s, 0);
+    return block_done;
 }
diff --git a/Modules/zlib/deflate.h b/Modules/zlib/deflate.h
--- a/Modules/zlib/deflate.h
+++ b/Modules/zlib/deflate.h
@@ -1,5 +1,5 @@
 /* deflate.h -- internal compression state
- * Copyright (C) 1995-2010 Jean-loup Gailly
+ * Copyright (C) 1995-2012 Jean-loup Gailly
  * For conditions of distribution and use, see copyright notice in zlib.h
  */
 
@@ -48,6 +48,9 @@
 #define MAX_BITS 15
 /* All codes must not exceed MAX_BITS bits */
 
+#define Buf_size 16
+/* size of bit buffer in bi_buf */
+
 #define INIT_STATE    42
 #define EXTRA_STATE   69
 #define NAME_STATE    73
@@ -101,7 +104,7 @@
     int   wrap;          /* bit 0 true for zlib, bit 1 true for gzip */
     gz_headerp  gzhead;  /* gzip header information to write */
     uInt   gzindex;      /* where in extra, name, or comment */
-    Byte  method;        /* STORED (for zip only) or DEFLATED */
+    Byte  method;        /* can only be DEFLATED */
     int   last_flush;    /* value of flush param for previous deflate call */
 
                 /* used by deflate.c: */
@@ -188,7 +191,7 @@
     int nice_match; /* Stop searching when current match exceeds this */
 
                 /* used by trees.c: */
-    /* Didn't use ct_data typedef below to supress compiler warning */
+    /* Didn't use ct_data typedef below to suppress compiler warning */
     struct ct_data_s dyn_ltree[HEAP_SIZE];   /* literal and length tree */
     struct ct_data_s dyn_dtree[2*D_CODES+1]; /* distance tree */
     struct ct_data_s bl_tree[2*BL_CODES+1];  /* Huffman tree for bit lengths */
@@ -244,7 +247,7 @@
     ulg opt_len;        /* bit length of current block with optimal trees */
     ulg static_len;     /* bit length of current block with static trees */
     uInt matches;       /* number of string matches in current block */
-    int last_eob_len;   /* bit length of EOB code for last block */
+    uInt insert;        /* bytes at end of window left to insert */
 
 #ifdef DEBUG
     ulg compressed_len; /* total bit length of compressed file mod 2^32 */
@@ -294,6 +297,7 @@
 int ZLIB_INTERNAL _tr_tally OF((deflate_state *s, unsigned dist, unsigned lc));
 void ZLIB_INTERNAL _tr_flush_block OF((deflate_state *s, charf *buf,
                         ulg stored_len, int last));
+void ZLIB_INTERNAL _tr_flush_bits OF((deflate_state *s));
 void ZLIB_INTERNAL _tr_align OF((deflate_state *s));
 void ZLIB_INTERNAL _tr_stored_block OF((deflate_state *s, charf *buf,
                         ulg stored_len, int last));
diff --git a/Modules/zlib/example.c b/Modules/zlib/example.c
--- a/Modules/zlib/example.c
+++ b/Modules/zlib/example.c
@@ -1,5 +1,5 @@
 /* example.c -- usage example of the zlib compression library
- * Copyright (C) 1995-2006 Jean-loup Gailly.
+ * Copyright (C) 1995-2006, 2011 Jean-loup Gailly.
  * For conditions of distribution and use, see copyright notice in zlib.h
  */
 
@@ -26,7 +26,7 @@
     } \
 }
 
-const char hello[] = "hello, hello!";
+z_const char hello[] = "hello, hello!";
 /* "hello world" would be more standard, but the repeated "hello"
  * stresses the compression code better, sorry...
  */
@@ -34,10 +34,6 @@
 const char dictionary[] = "hello";
 uLong dictId; /* Adler32 value of the dictionary */
 
-void test_compress      OF((Byte *compr, uLong comprLen,
-                            Byte *uncompr, uLong uncomprLen));
-void test_gzio          OF((const char *fname,
-                            Byte *uncompr, uLong uncomprLen));
 void test_deflate       OF((Byte *compr, uLong comprLen));
 void test_inflate       OF((Byte *compr, uLong comprLen,
                             Byte *uncompr, uLong uncomprLen));
@@ -53,6 +49,39 @@
                             Byte *uncompr, uLong uncomprLen));
 int  main               OF((int argc, char *argv[]));
 
+
+#ifdef Z_SOLO
+
+void *myalloc OF((void *, unsigned, unsigned));
+void myfree OF((void *, void *));
+
+void *myalloc(q, n, m)
+    void *q;
+    unsigned n, m;
+{
+    q = Z_NULL;
+    return calloc(n, m);
+}
+
+void myfree(void *q, void *p)
+{
+    q = Z_NULL;
+    free(p);
+}
+
+static alloc_func zalloc = myalloc;
+static free_func zfree = myfree;
+
+#else /* !Z_SOLO */
+
+static alloc_func zalloc = (alloc_func)0;
+static free_func zfree = (free_func)0;
+
+void test_compress      OF((Byte *compr, uLong comprLen,
+                            Byte *uncompr, uLong uncomprLen));
+void test_gzio          OF((const char *fname,
+                            Byte *uncompr, uLong uncomprLen));
+
 /* ===========================================================================
  * Test compress() and uncompress()
  */
@@ -163,6 +192,8 @@
 #endif
 }
 
+#endif /* Z_SOLO */
+
 /* ===========================================================================
  * Test deflate() with small buffers
  */
@@ -174,14 +205,14 @@
     int err;
     uLong len = (uLong)strlen(hello)+1;
 
-    c_stream.zalloc = (alloc_func)0;
-    c_stream.zfree = (free_func)0;
+    c_stream.zalloc = zalloc;
+    c_stream.zfree = zfree;
     c_stream.opaque = (voidpf)0;
 
     err = deflateInit(&c_stream, Z_DEFAULT_COMPRESSION);
     CHECK_ERR(err, "deflateInit");
 
-    c_stream.next_in  = (Bytef*)hello;
+    c_stream.next_in  = (z_const unsigned char *)hello;
     c_stream.next_out = compr;
 
     while (c_stream.total_in != len && c_stream.total_out < comprLen) {
@@ -213,8 +244,8 @@
 
     strcpy((char*)uncompr, "garbage");
 
-    d_stream.zalloc = (alloc_func)0;
-    d_stream.zfree = (free_func)0;
+    d_stream.zalloc = zalloc;
+    d_stream.zfree = zfree;
     d_stream.opaque = (voidpf)0;
 
     d_stream.next_in  = compr;
@@ -252,8 +283,8 @@
     z_stream c_stream; /* compression stream */
     int err;
 
-    c_stream.zalloc = (alloc_func)0;
-    c_stream.zfree = (free_func)0;
+    c_stream.zalloc = zalloc;
+    c_stream.zfree = zfree;
     c_stream.opaque = (voidpf)0;
 
     err = deflateInit(&c_stream, Z_BEST_SPEED);
@@ -309,8 +340,8 @@
 
     strcpy((char*)uncompr, "garbage");
 
-    d_stream.zalloc = (alloc_func)0;
-    d_stream.zfree = (free_func)0;
+    d_stream.zalloc = zalloc;
+    d_stream.zfree = zfree;
     d_stream.opaque = (voidpf)0;
 
     d_stream.next_in  = compr;
@@ -349,14 +380,14 @@
     int err;
     uInt len = (uInt)strlen(hello)+1;
 
-    c_stream.zalloc = (alloc_func)0;
-    c_stream.zfree = (free_func)0;
+    c_stream.zalloc = zalloc;
+    c_stream.zfree = zfree;
     c_stream.opaque = (voidpf)0;
 
     err = deflateInit(&c_stream, Z_DEFAULT_COMPRESSION);
     CHECK_ERR(err, "deflateInit");
 
-    c_stream.next_in  = (Bytef*)hello;
+    c_stream.next_in  = (z_const unsigned char *)hello;
     c_stream.next_out = compr;
     c_stream.avail_in = 3;
     c_stream.avail_out = (uInt)*comprLen;
@@ -388,8 +419,8 @@
 
     strcpy((char*)uncompr, "garbage");
 
-    d_stream.zalloc = (alloc_func)0;
-    d_stream.zfree = (free_func)0;
+    d_stream.zalloc = zalloc;
+    d_stream.zfree = zfree;
     d_stream.opaque = (voidpf)0;
 
     d_stream.next_in  = compr;
@@ -430,22 +461,22 @@
     z_stream c_stream; /* compression stream */
     int err;
 
-    c_stream.zalloc = (alloc_func)0;
-    c_stream.zfree = (free_func)0;
+    c_stream.zalloc = zalloc;
+    c_stream.zfree = zfree;
     c_stream.opaque = (voidpf)0;
 
     err = deflateInit(&c_stream, Z_BEST_COMPRESSION);
     CHECK_ERR(err, "deflateInit");
 
     err = deflateSetDictionary(&c_stream,
-                               (const Bytef*)dictionary, sizeof(dictionary));
+                (const Bytef*)dictionary, (int)sizeof(dictionary));
     CHECK_ERR(err, "deflateSetDictionary");
 
     dictId = c_stream.adler;
     c_stream.next_out = compr;
     c_stream.avail_out = (uInt)comprLen;
 
-    c_stream.next_in = (Bytef*)hello;
+    c_stream.next_in = (z_const unsigned char *)hello;
     c_stream.avail_in = (uInt)strlen(hello)+1;
 
     err = deflate(&c_stream, Z_FINISH);
@@ -469,8 +500,8 @@
 
     strcpy((char*)uncompr, "garbage");
 
-    d_stream.zalloc = (alloc_func)0;
-    d_stream.zfree = (free_func)0;
+    d_stream.zalloc = zalloc;
+    d_stream.zfree = zfree;
     d_stream.opaque = (voidpf)0;
 
     d_stream.next_in  = compr;
@@ -491,7 +522,7 @@
                 exit(1);
             }
             err = inflateSetDictionary(&d_stream, (const Bytef*)dictionary,
-                                       sizeof(dictionary));
+                                       (int)sizeof(dictionary));
         }
         CHECK_ERR(err, "inflate with dict");
     }
@@ -540,10 +571,15 @@
         printf("out of memory\n");
         exit(1);
     }
+
+#ifdef Z_SOLO
+    argc = strlen(argv[0]);
+#else
     test_compress(compr, comprLen, uncompr, uncomprLen);
 
     test_gzio((argc > 1 ? argv[1] : TESTFILE),
               uncompr, uncomprLen);
+#endif
 
     test_deflate(compr, comprLen);
     test_inflate(compr, comprLen, uncompr, uncomprLen);
diff --git a/Modules/zlib/gzguts.h b/Modules/zlib/gzguts.h
--- a/Modules/zlib/gzguts.h
+++ b/Modules/zlib/gzguts.h
@@ -1,5 +1,5 @@
 /* gzguts.h -- zlib internal header definitions for gz* operations
- * Copyright (C) 2004, 2005, 2010 Mark Adler
+ * Copyright (C) 2004, 2005, 2010, 2011, 2012, 2013 Mark Adler
  * For conditions of distribution and use, see copyright notice in zlib.h
  */
 
@@ -12,7 +12,7 @@
 #  endif
 #endif
 
-#if ((__GNUC__-0) * 10 + __GNUC_MINOR__-0 >= 33) && !defined(NO_VIZ)
+#ifdef HAVE_HIDDEN
 #  define ZLIB_INTERNAL __attribute__((visibility ("hidden")))
 #else
 #  define ZLIB_INTERNAL
@@ -27,13 +27,80 @@
 #endif
 #include <fcntl.h>
 
+#ifdef _WIN32
+#  include <stddef.h>
+#endif
+
+#if defined(__TURBOC__) || defined(_MSC_VER) || defined(_WIN32)
+#  include <io.h>
+#endif
+
+#ifdef WINAPI_FAMILY
+#  define open _open
+#  define read _read
+#  define write _write
+#  define close _close
+#endif
+
 #ifdef NO_DEFLATE       /* for compatibility with old definition */
 #  define NO_GZCOMPRESS
 #endif
 
+#if defined(STDC99) || (defined(__TURBOC__) && __TURBOC__ >= 0x550)
+#  ifndef HAVE_VSNPRINTF
+#    define HAVE_VSNPRINTF
+#  endif
+#endif
+
+#if defined(__CYGWIN__)
+#  ifndef HAVE_VSNPRINTF
+#    define HAVE_VSNPRINTF
+#  endif
+#endif
+
+#if defined(MSDOS) && defined(__BORLANDC__) && (BORLANDC > 0x410)
+#  ifndef HAVE_VSNPRINTF
+#    define HAVE_VSNPRINTF
+#  endif
+#endif
+
+#ifndef HAVE_VSNPRINTF
+#  ifdef MSDOS
+/* vsnprintf may exist on some MS-DOS compilers (DJGPP?),
+   but for now we just assume it doesn't. */
+#    define NO_vsnprintf
+#  endif
+#  ifdef __TURBOC__
+#    define NO_vsnprintf
+#  endif
+#  ifdef WIN32
+/* In Win32, vsnprintf is available as the "non-ANSI" _vsnprintf. */
+#    if !defined(vsnprintf) && !defined(NO_vsnprintf)
+#      if !defined(_MSC_VER) || ( defined(_MSC_VER) && _MSC_VER < 1500 )
+#         define vsnprintf _vsnprintf
+#      endif
+#    endif
+#  endif
+#  ifdef __SASC
+#    define NO_vsnprintf
+#  endif
+#  ifdef VMS
+#    define NO_vsnprintf
+#  endif
+#  ifdef __OS400__
+#    define NO_vsnprintf
+#  endif
+#  ifdef __MVS__
+#    define NO_vsnprintf
+#  endif
+#endif
+
+/* unlike snprintf (which is required in C99, yet still not supported by
+   Microsoft more than a decade later!), _snprintf does not guarantee null
+   termination of the result -- however this is only used in gzlib.c where
+   the result is assured to fit in the space provided */
 #ifdef _MSC_VER
-#  include <io.h>
-#  define vsnprintf _vsnprintf
+#  define snprintf _snprintf
 #endif
 
 #ifndef local
@@ -52,7 +119,7 @@
 #  include <windows.h>
 #  define zstrerror() gz_strwinerror((DWORD)GetLastError())
 #else
-#  ifdef STDC
+#  ifndef NO_STRERROR
 #    include <errno.h>
 #    define zstrerror() strerror(errno)
 #  else
@@ -68,7 +135,15 @@
     ZEXTERN z_off64_t ZEXPORT gzoffset64 OF((gzFile));
 #endif
 
-/* default i/o buffer size -- double this for output when reading */
+/* default memLevel */
+#if MAX_MEM_LEVEL >= 8
+#  define DEF_MEM_LEVEL 8
+#else
+#  define DEF_MEM_LEVEL  MAX_MEM_LEVEL
+#endif
+
+/* default i/o buffer size -- double this for output when reading (this and
+   twice this must be able to fit in an unsigned type) */
 #define GZBUFSIZE 8192
 
 /* gzip modes, also provide a little integrity check on the passed structure */
@@ -84,23 +159,25 @@
 
 /* internal gzip file state data structure */
 typedef struct {
+        /* exposed contents for gzgetc() macro */
+    struct gzFile_s x;      /* "x" for exposed */
+                            /* x.have: number of bytes available at x.next */
+                            /* x.next: next output data to deliver or write */
+                            /* x.pos: current position in uncompressed data */
         /* used for both reading and writing */
     int mode;               /* see gzip modes above */
     int fd;                 /* file descriptor */
     char *path;             /* path or fd for error messages */
-    z_off64_t pos;          /* current position in uncompressed data */
     unsigned size;          /* buffer size, zero if not allocated yet */
     unsigned want;          /* requested buffer size, default is GZBUFSIZE */
     unsigned char *in;      /* input buffer */
     unsigned char *out;     /* output buffer (double-sized when reading) */
-    unsigned char *next;    /* next output data to deliver or write */
+    int direct;             /* 0 if processing gzip, 1 if transparent */
         /* just for reading */
-    unsigned have;          /* amount of output data unused at next */
+    int how;                /* 0: get header, 1: copy, 2: decompress */
+    z_off64_t start;        /* where the gzip data started, for rewinding */
     int eof;                /* true if end of input file reached */
-    z_off64_t start;        /* where the gzip data started, for rewinding */
-    z_off64_t raw;          /* where the raw data started, for seeking */
-    int how;                /* 0: get header, 1: copy, 2: decompress */
-    int direct;             /* true if last read direct, false if gzip */
+    int past;               /* true if read requested past end */
         /* just for writing */
     int level;              /* compression level */
     int strategy;           /* compression strategy */
diff --git a/Modules/zlib/gzio.c b/Modules/zlib/gzio.c
deleted file mode 100644
--- a/Modules/zlib/gzio.c
+++ /dev/null
@@ -1,1026 +0,0 @@
-/* gzio.c -- IO on .gz files
- * Copyright (C) 1995-2005 Jean-loup Gailly.
- * For conditions of distribution and use, see copyright notice in zlib.h
- *
- * Compile this file with -DNO_GZCOMPRESS to avoid the compression code.
- */
-
-/* @(#) $Id$ */
-
-#include <stdio.h>
-
-#include "zutil.h"
-
-#ifdef NO_DEFLATE       /* for compatibility with old definition */
-#  define NO_GZCOMPRESS
-#endif
-
-#ifndef NO_DUMMY_DECL
-struct internal_state {int dummy;}; /* for buggy compilers */
-#endif
-
-#ifndef Z_BUFSIZE
-#  ifdef MAXSEG_64K
-#    define Z_BUFSIZE 4096 /* minimize memory usage for 16-bit DOS */
-#  else
-#    define Z_BUFSIZE 16384
-#  endif
-#endif
-#ifndef Z_PRINTF_BUFSIZE
-#  define Z_PRINTF_BUFSIZE 4096
-#endif
-
-#ifdef __MVS__
-#  pragma map (fdopen , "\174\174FDOPEN")
-   FILE *fdopen(int, const char *);
-#endif
-
-#ifndef STDC
-extern voidp  malloc OF((uInt size));
-extern void   free   OF((voidpf ptr));
-#endif
-
-#define ALLOC(size) malloc(size)
-#define TRYFREE(p) {if (p) free(p);}
-
-static int const gz_magic[2] = {0x1f, 0x8b}; /* gzip magic header */
-
-/* gzip flag byte */
-#define ASCII_FLAG   0x01 /* bit 0 set: file probably ascii text */
-#define HEAD_CRC     0x02 /* bit 1 set: header CRC present */
-#define EXTRA_FIELD  0x04 /* bit 2 set: extra field present */
-#define ORIG_NAME    0x08 /* bit 3 set: original file name present */
-#define COMMENT      0x10 /* bit 4 set: file comment present */
-#define RESERVED     0xE0 /* bits 5..7: reserved */
-
-typedef struct gz_stream {
-    z_stream stream;
-    int      z_err;   /* error code for last stream operation */
-    int      z_eof;   /* set if end of input file */
-    FILE     *file;   /* .gz file */
-    Byte     *inbuf;  /* input buffer */
-    Byte     *outbuf; /* output buffer */
-    uLong    crc;     /* crc32 of uncompressed data */
-    char     *msg;    /* error message */
-    char     *path;   /* path name for debugging only */
-    int      transparent; /* 1 if input file is not a .gz file */
-    char     mode;    /* 'w' or 'r' */
-    z_off_t  start;   /* start of compressed data in file (header skipped) */
-    z_off_t  in;      /* bytes into deflate or inflate */
-    z_off_t  out;     /* bytes out of deflate or inflate */
-    int      back;    /* one character push-back */
-    int      last;    /* true if push-back is last character */
-} gz_stream;
-
-
-local gzFile gz_open      OF((const char *path, const char *mode, int  fd));
-local int do_flush        OF((gzFile file, int flush));
-local int    get_byte     OF((gz_stream *s));
-local void   check_header OF((gz_stream *s));
-local int    destroy      OF((gz_stream *s));
-local void   putLong      OF((FILE *file, uLong x));
-local uLong  getLong      OF((gz_stream *s));
-
-/* ===========================================================================
-     Opens a gzip (.gz) file for reading or writing. The mode parameter
-   is as in fopen ("rb" or "wb"). The file is given either by file descriptor
-   or path name (if fd == -1).
-     gz_open returns NULL if the file could not be opened or if there was
-   insufficient memory to allocate the (de)compression state; errno
-   can be checked to distinguish the two cases (if errno is zero, the
-   zlib error is Z_MEM_ERROR).
-*/
-local gzFile gz_open (path, mode, fd)
-    const char *path;
-    const char *mode;
-    int  fd;
-{
-    int err;
-    int level = Z_DEFAULT_COMPRESSION; /* compression level */
-    int strategy = Z_DEFAULT_STRATEGY; /* compression strategy */
-    char *p = (char*)mode;
-    gz_stream *s;
-    char fmode[80]; /* copy of mode, without the compression level */
-    char *m = fmode;
-
-    if (!path || !mode) return Z_NULL;
-
-    s = (gz_stream *)ALLOC(sizeof(gz_stream));
-    if (!s) return Z_NULL;
-
-    s->stream.zalloc = (alloc_func)0;
-    s->stream.zfree = (free_func)0;
-    s->stream.opaque = (voidpf)0;
-    s->stream.next_in = s->inbuf = Z_NULL;
-    s->stream.next_out = s->outbuf = Z_NULL;
-    s->stream.avail_in = s->stream.avail_out = 0;
-    s->file = NULL;
-    s->z_err = Z_OK;
-    s->z_eof = 0;
-    s->in = 0;
-    s->out = 0;
-    s->back = EOF;
-    s->crc = crc32(0L, Z_NULL, 0);
-    s->msg = NULL;
-    s->transparent = 0;
-
-    s->path = (char*)ALLOC(strlen(path)+1);
-    if (s->path == NULL) {
-        return destroy(s), (gzFile)Z_NULL;
-    }
-    strcpy(s->path, path); /* do this early for debugging */
-
-    s->mode = '\0';
-    do {
-        if (*p == 'r') s->mode = 'r';
-        if (*p == 'w' || *p == 'a') s->mode = 'w';
-        if (*p >= '0' && *p <= '9') {
-            level = *p - '0';
-        } else if (*p == 'f') {
-          strategy = Z_FILTERED;
-        } else if (*p == 'h') {
-          strategy = Z_HUFFMAN_ONLY;
-        } else if (*p == 'R') {
-          strategy = Z_RLE;
-        } else {
-            *m++ = *p; /* copy the mode */
-        }
-    } while (*p++ && m != fmode + sizeof(fmode));
-    if (s->mode == '\0') return destroy(s), (gzFile)Z_NULL;
-
-    if (s->mode == 'w') {
-#ifdef NO_GZCOMPRESS
-        err = Z_STREAM_ERROR;
-#else
-        err = deflateInit2(&(s->stream), level,
-                           Z_DEFLATED, -MAX_WBITS, DEF_MEM_LEVEL, strategy);
-        /* windowBits is passed < 0 to suppress zlib header */
-
-        s->stream.next_out = s->outbuf = (Byte*)ALLOC(Z_BUFSIZE);
-#endif
-        if (err != Z_OK || s->outbuf == Z_NULL) {
-            return destroy(s), (gzFile)Z_NULL;
-        }
-    } else {
-        s->stream.next_in  = s->inbuf = (Byte*)ALLOC(Z_BUFSIZE);
-
-        err = inflateInit2(&(s->stream), -MAX_WBITS);
-        /* windowBits is passed < 0 to tell that there is no zlib header.
-         * Note that in this case inflate *requires* an extra "dummy" byte
-         * after the compressed stream in order to complete decompression and
-         * return Z_STREAM_END. Here the gzip CRC32 ensures that 4 bytes are
-         * present after the compressed stream.
-         */
-        if (err != Z_OK || s->inbuf == Z_NULL) {
-            return destroy(s), (gzFile)Z_NULL;
-        }
-    }
-    s->stream.avail_out = Z_BUFSIZE;
-
-    errno = 0;
-    s->file = fd < 0 ? F_OPEN(path, fmode) : (FILE*)fdopen(fd, fmode);
-
-    if (s->file == NULL) {
-        return destroy(s), (gzFile)Z_NULL;
-    }
-    if (s->mode == 'w') {
-        /* Write a very simple .gz header:
-         */
-        fprintf(s->file, "%c%c%c%c%c%c%c%c%c%c", gz_magic[0], gz_magic[1],
-             Z_DEFLATED, 0 /*flags*/, 0,0,0,0 /*time*/, 0 /*xflags*/, OS_CODE);
-        s->start = 10L;
-        /* We use 10L instead of ftell(s->file) to because ftell causes an
-         * fflush on some systems. This version of the library doesn't use
-         * start anyway in write mode, so this initialization is not
-         * necessary.
-         */
-    } else {
-        check_header(s); /* skip the .gz header */
-        s->start = ftell(s->file) - s->stream.avail_in;
-    }
-
-    return (gzFile)s;
-}
-
-/* ===========================================================================
-     Opens a gzip (.gz) file for reading or writing.
-*/
-gzFile ZEXPORT gzopen (path, mode)
-    const char *path;
-    const char *mode;
-{
-    return gz_open (path, mode, -1);
-}
-
-/* ===========================================================================
-     Associate a gzFile with the file descriptor fd. fd is not dup'ed here
-   to mimic the behavio(u)r of fdopen.
-*/
-gzFile ZEXPORT gzdopen (fd, mode)
-    int fd;
-    const char *mode;
-{
-    char name[46];      /* allow for up to 128-bit integers */
-
-    if (fd < 0) return (gzFile)Z_NULL;
-    sprintf(name, "<fd:%d>", fd); /* for debugging */
-
-    return gz_open (name, mode, fd);
-}
-
-/* ===========================================================================
- * Update the compression level and strategy
- */
-int ZEXPORT gzsetparams (file, level, strategy)
-    gzFile file;
-    int level;
-    int strategy;
-{
-    gz_stream *s = (gz_stream*)file;
-
-    if (s == NULL || s->mode != 'w') return Z_STREAM_ERROR;
-
-    /* Make room to allow flushing */
-    if (s->stream.avail_out == 0) {
-
-        s->stream.next_out = s->outbuf;
-        if (fwrite(s->outbuf, 1, Z_BUFSIZE, s->file) != Z_BUFSIZE) {
-            s->z_err = Z_ERRNO;
-        }
-        s->stream.avail_out = Z_BUFSIZE;
-    }
-
-    return deflateParams (&(s->stream), level, strategy);
-}
-
-/* ===========================================================================
-     Read a byte from a gz_stream; update next_in and avail_in. Return EOF
-   for end of file.
-   IN assertion: the stream s has been sucessfully opened for reading.
-*/
-local int get_byte(s)
-    gz_stream *s;
-{
-    if (s->z_eof) return EOF;
-    if (s->stream.avail_in == 0) {
-        errno = 0;
-        s->stream.avail_in = (uInt)fread(s->inbuf, 1, Z_BUFSIZE, s->file);
-        if (s->stream.avail_in == 0) {
-            s->z_eof = 1;
-            if (ferror(s->file)) s->z_err = Z_ERRNO;
-            return EOF;
-        }
-        s->stream.next_in = s->inbuf;
-    }
-    s->stream.avail_in--;
-    return *(s->stream.next_in)++;
-}
-
-/* ===========================================================================
-      Check the gzip header of a gz_stream opened for reading. Set the stream
-    mode to transparent if the gzip magic header is not present; set s->err
-    to Z_DATA_ERROR if the magic header is present but the rest of the header
-    is incorrect.
-    IN assertion: the stream s has already been created sucessfully;
-       s->stream.avail_in is zero for the first time, but may be non-zero
-       for concatenated .gz files.
-*/
-local void check_header(s)
-    gz_stream *s;
-{
-    int method; /* method byte */
-    int flags;  /* flags byte */
-    uInt len;
-    int c;
-
-    /* Assure two bytes in the buffer so we can peek ahead -- handle case
-       where first byte of header is at the end of the buffer after the last
-       gzip segment */
-    len = s->stream.avail_in;
-    if (len < 2) {
-        if (len) s->inbuf[0] = s->stream.next_in[0];
-        errno = 0;
-        len = (uInt)fread(s->inbuf + len, 1, Z_BUFSIZE >> len, s->file);
-        if (len == 0 && ferror(s->file)) s->z_err = Z_ERRNO;
-        s->stream.avail_in += len;
-        s->stream.next_in = s->inbuf;
-        if (s->stream.avail_in < 2) {
-            s->transparent = s->stream.avail_in;
-            return;
-        }
-    }
-
-    /* Peek ahead to check the gzip magic header */
-    if (s->stream.next_in[0] != gz_magic[0] ||
-        s->stream.next_in[1] != gz_magic[1]) {
-        s->transparent = 1;
-        return;
-    }
-    s->stream.avail_in -= 2;
-    s->stream.next_in += 2;
-
-    /* Check the rest of the gzip header */
-    method = get_byte(s);
-    flags = get_byte(s);
-    if (method != Z_DEFLATED || (flags & RESERVED) != 0) {
-        s->z_err = Z_DATA_ERROR;
-        return;
-    }
-
-    /* Discard time, xflags and OS code: */
-    for (len = 0; len < 6; len++) (void)get_byte(s);
-
-    if ((flags & EXTRA_FIELD) != 0) { /* skip the extra field */
-        len  =  (uInt)get_byte(s);
-        len += ((uInt)get_byte(s))<<8;
-        /* len is garbage if EOF but the loop below will quit anyway */
-        while (len-- != 0 && get_byte(s) != EOF) ;
-    }
-    if ((flags & ORIG_NAME) != 0) { /* skip the original file name */
-        while ((c = get_byte(s)) != 0 && c != EOF) ;
-    }
-    if ((flags & COMMENT) != 0) {   /* skip the .gz file comment */
-        while ((c = get_byte(s)) != 0 && c != EOF) ;
-    }
-    if ((flags & HEAD_CRC) != 0) {  /* skip the header crc */
-        for (len = 0; len < 2; len++) (void)get_byte(s);
-    }
-    s->z_err = s->z_eof ? Z_DATA_ERROR : Z_OK;
-}
-
- /* ===========================================================================
- * Cleanup then free the given gz_stream. Return a zlib error code.
-   Try freeing in the reverse order of allocations.
- */
-local int destroy (s)
-    gz_stream *s;
-{
-    int err = Z_OK;
-
-    if (!s) return Z_STREAM_ERROR;
-
-    TRYFREE(s->msg);
-
-    if (s->stream.state != NULL) {
-        if (s->mode == 'w') {
-#ifdef NO_GZCOMPRESS
-            err = Z_STREAM_ERROR;
-#else
-            err = deflateEnd(&(s->stream));
-#endif
-        } else if (s->mode == 'r') {
-            err = inflateEnd(&(s->stream));
-        }
-    }
-    if (s->file != NULL && fclose(s->file)) {
-#ifdef ESPIPE
-        if (errno != ESPIPE) /* fclose is broken for pipes in HP/UX */
-#endif
-            err = Z_ERRNO;
-    }
-    if (s->z_err < 0) err = s->z_err;
-
-    TRYFREE(s->inbuf);
-    TRYFREE(s->outbuf);
-    TRYFREE(s->path);
-    TRYFREE(s);
-    return err;
-}
-
-/* ===========================================================================
-     Reads the given number of uncompressed bytes from the compressed file.
-   gzread returns the number of bytes actually read (0 for end of file).
-*/
-int ZEXPORT gzread (file, buf, len)
-    gzFile file;
-    voidp buf;
-    unsigned len;
-{
-    gz_stream *s = (gz_stream*)file;
-    Bytef *start = (Bytef*)buf; /* starting point for crc computation */
-    Byte  *next_out; /* == stream.next_out but not forced far (for MSDOS) */
-
-    if (s == NULL || s->mode != 'r') return Z_STREAM_ERROR;
-
-    if (s->z_err == Z_DATA_ERROR || s->z_err == Z_ERRNO) return -1;
-    if (s->z_err == Z_STREAM_END) return 0;  /* EOF */
-
-    next_out = (Byte*)buf;
-    s->stream.next_out = (Bytef*)buf;
-    s->stream.avail_out = len;
-
-    if (s->stream.avail_out && s->back != EOF) {
-        *next_out++ = s->back;
-        s->stream.next_out++;
-        s->stream.avail_out--;
-        s->back = EOF;
-        s->out++;
-        start++;
-        if (s->last) {
-            s->z_err = Z_STREAM_END;
-            return 1;
-        }
-    }
-
-    while (s->stream.avail_out != 0) {
-
-        if (s->transparent) {
-            /* Copy first the lookahead bytes: */
-            uInt n = s->stream.avail_in;
-            if (n > s->stream.avail_out) n = s->stream.avail_out;
-            if (n > 0) {
-                zmemcpy(s->stream.next_out, s->stream.next_in, n);
-                next_out += n;
-                s->stream.next_out = next_out;
-                s->stream.next_in   += n;
-                s->stream.avail_out -= n;
-                s->stream.avail_in  -= n;
-            }
-            if (s->stream.avail_out > 0) {
-                s->stream.avail_out -=
-                    (uInt)fread(next_out, 1, s->stream.avail_out, s->file);
-            }
-            len -= s->stream.avail_out;
-            s->in  += len;
-            s->out += len;
-            if (len == 0) s->z_eof = 1;
-            return (int)len;
-        }
-        if (s->stream.avail_in == 0 && !s->z_eof) {
-
-            errno = 0;
-            s->stream.avail_in = (uInt)fread(s->inbuf, 1, Z_BUFSIZE, s->file);
-            if (s->stream.avail_in == 0) {
-                s->z_eof = 1;
-                if (ferror(s->file)) {
-                    s->z_err = Z_ERRNO;
-                    break;
-                }
-            }
-            s->stream.next_in = s->inbuf;
-        }
-        s->in += s->stream.avail_in;
-        s->out += s->stream.avail_out;
-        s->z_err = inflate(&(s->stream), Z_NO_FLUSH);
-        s->in -= s->stream.avail_in;
-        s->out -= s->stream.avail_out;
-
-        if (s->z_err == Z_STREAM_END) {
-            /* Check CRC and original size */
-            s->crc = crc32(s->crc, start, (uInt)(s->stream.next_out - start));
-            start = s->stream.next_out;
-
-            if (getLong(s) != s->crc) {
-                s->z_err = Z_DATA_ERROR;
-            } else {
-                (void)getLong(s);
-                /* The uncompressed length returned by above getlong() may be
-                 * different from s->out in case of concatenated .gz files.
-                 * Check for such files:
-                 */
-                check_header(s);
-                if (s->z_err == Z_OK) {
-                    inflateReset(&(s->stream));
-                    s->crc = crc32(0L, Z_NULL, 0);
-                }
-            }
-        }
-        if (s->z_err != Z_OK || s->z_eof) break;
-    }
-    s->crc = crc32(s->crc, start, (uInt)(s->stream.next_out - start));
-
-    if (len == s->stream.avail_out &&
-        (s->z_err == Z_DATA_ERROR || s->z_err == Z_ERRNO))
-        return -1;
-    return (int)(len - s->stream.avail_out);
-}
-
-
-/* ===========================================================================
-      Reads one byte from the compressed file. gzgetc returns this byte
-   or -1 in case of end of file or error.
-*/
-int ZEXPORT gzgetc(file)
-    gzFile file;
-{
-    unsigned char c;
-
-    return gzread(file, &c, 1) == 1 ? c : -1;
-}
-
-
-/* ===========================================================================
-      Push one byte back onto the stream.
-*/
-int ZEXPORT gzungetc(c, file)
-    int c;
-    gzFile file;
-{
-    gz_stream *s = (gz_stream*)file;
-
-    if (s == NULL || s->mode != 'r' || c == EOF || s->back != EOF) return EOF;
-    s->back = c;
-    s->out--;
-    s->last = (s->z_err == Z_STREAM_END);
-    if (s->last) s->z_err = Z_OK;
-    s->z_eof = 0;
-    return c;
-}
-
-
-/* ===========================================================================
-      Reads bytes from the compressed file until len-1 characters are
-   read, or a newline character is read and transferred to buf, or an
-   end-of-file condition is encountered.  The string is then terminated
-   with a null character.
-      gzgets returns buf, or Z_NULL in case of error.
-
-      The current implementation is not optimized at all.
-*/
-char * ZEXPORT gzgets(file, buf, len)
-    gzFile file;
-    char *buf;
-    int len;
-{
-    char *b = buf;
-    if (buf == Z_NULL || len <= 0) return Z_NULL;
-
-    while (--len > 0 && gzread(file, buf, 1) == 1 && *buf++ != '\n') ;
-    *buf = '\0';
-    return b == buf && len > 0 ? Z_NULL : b;
-}
-
-
-#ifndef NO_GZCOMPRESS
-/* ===========================================================================
-     Writes the given number of uncompressed bytes into the compressed file.
-   gzwrite returns the number of bytes actually written (0 in case of error).
-*/
-int ZEXPORT gzwrite (file, buf, len)
-    gzFile file;
-    voidpc buf;
-    unsigned len;
-{
-    gz_stream *s = (gz_stream*)file;
-
-    if (s == NULL || s->mode != 'w') return Z_STREAM_ERROR;
-
-    s->stream.next_in = (Bytef*)buf;
-    s->stream.avail_in = len;
-
-    while (s->stream.avail_in != 0) {
-
-        if (s->stream.avail_out == 0) {
-
-            s->stream.next_out = s->outbuf;
-            if (fwrite(s->outbuf, 1, Z_BUFSIZE, s->file) != Z_BUFSIZE) {
-                s->z_err = Z_ERRNO;
-                break;
-            }
-            s->stream.avail_out = Z_BUFSIZE;
-        }
-        s->in += s->stream.avail_in;
-        s->out += s->stream.avail_out;
-        s->z_err = deflate(&(s->stream), Z_NO_FLUSH);
-        s->in -= s->stream.avail_in;
-        s->out -= s->stream.avail_out;
-        if (s->z_err != Z_OK) break;
-    }
-    s->crc = crc32(s->crc, (const Bytef *)buf, len);
-
-    return (int)(len - s->stream.avail_in);
-}
-
-
-/* ===========================================================================
-     Converts, formats, and writes the args to the compressed file under
-   control of the format string, as in fprintf. gzprintf returns the number of
-   uncompressed bytes actually written (0 in case of error).
-*/
-#ifdef STDC
-#include <stdarg.h>
-
-int ZEXPORTVA gzprintf (gzFile file, const char *format, /* args */ ...)
-{
-    char buf[Z_PRINTF_BUFSIZE];
-    va_list va;
-    int len;
-
-    buf[sizeof(buf) - 1] = 0;
-    va_start(va, format);
-#ifdef NO_vsnprintf
-#  ifdef HAS_vsprintf_void
-    (void)vsprintf(buf, format, va);
-    va_end(va);
-    for (len = 0; len < sizeof(buf); len++)
-        if (buf[len] == 0) break;
-#  else
-    len = vsprintf(buf, format, va);
-    va_end(va);
-#  endif
-#else
-#  ifdef HAS_vsnprintf_void
-    (void)vsnprintf(buf, sizeof(buf), format, va);
-    va_end(va);
-    len = strlen(buf);
-#  else
-    len = vsnprintf(buf, sizeof(buf), format, va);
-    va_end(va);
-#  endif
-#endif
-    if (len <= 0 || len >= (int)sizeof(buf) || buf[sizeof(buf) - 1] != 0)
-        return 0;
-    return gzwrite(file, buf, (unsigned)len);
-}
-#else /* not ANSI C */
-
-int ZEXPORTVA gzprintf (file, format, a1, a2, a3, a4, a5, a6, a7, a8, a9, a10,
-                       a11, a12, a13, a14, a15, a16, a17, a18, a19, a20)
-    gzFile file;
-    const char *format;
-    int a1, a2, a3, a4, a5, a6, a7, a8, a9, a10,
-        a11, a12, a13, a14, a15, a16, a17, a18, a19, a20;
-{
-    char buf[Z_PRINTF_BUFSIZE];
-    int len;
-
-    buf[sizeof(buf) - 1] = 0;
-#ifdef NO_snprintf
-#  ifdef HAS_sprintf_void
-    sprintf(buf, format, a1, a2, a3, a4, a5, a6, a7, a8,
-            a9, a10, a11, a12, a13, a14, a15, a16, a17, a18, a19, a20);
-    for (len = 0; len < sizeof(buf); len++)
-        if (buf[len] == 0) break;
-#  else
-    len = sprintf(buf, format, a1, a2, a3, a4, a5, a6, a7, a8,
-                a9, a10, a11, a12, a13, a14, a15, a16, a17, a18, a19, a20);
-#  endif
-#else
-#  ifdef HAS_snprintf_void
-    snprintf(buf, sizeof(buf), format, a1, a2, a3, a4, a5, a6, a7, a8,
-             a9, a10, a11, a12, a13, a14, a15, a16, a17, a18, a19, a20);
-    len = strlen(buf);
-#  else
-    len = snprintf(buf, sizeof(buf), format, a1, a2, a3, a4, a5, a6, a7, a8,
-                 a9, a10, a11, a12, a13, a14, a15, a16, a17, a18, a19, a20);
-#  endif
-#endif
-    if (len <= 0 || len >= sizeof(buf) || buf[sizeof(buf) - 1] != 0)
-        return 0;
-    return gzwrite(file, buf, len);
-}
-#endif
-
-/* ===========================================================================
-      Writes c, converted to an unsigned char, into the compressed file.
-   gzputc returns the value that was written, or -1 in case of error.
-*/
-int ZEXPORT gzputc(file, c)
-    gzFile file;
-    int c;
-{
-    unsigned char cc = (unsigned char) c; /* required for big endian systems */
-
-    return gzwrite(file, &cc, 1) == 1 ? (int)cc : -1;
-}
-
-
-/* ===========================================================================
-      Writes the given null-terminated string to the compressed file, excluding
-   the terminating null character.
-      gzputs returns the number of characters written, or -1 in case of error.
-*/
-int ZEXPORT gzputs(file, s)
-    gzFile file;
-    const char *s;
-{
-    return gzwrite(file, (char*)s, (unsigned)strlen(s));
-}
-
-
-/* ===========================================================================
-     Flushes all pending output into the compressed file. The parameter
-   flush is as in the deflate() function.
-*/
-local int do_flush (file, flush)
-    gzFile file;
-    int flush;
-{
-    uInt len;
-    int done = 0;
-    gz_stream *s = (gz_stream*)file;
-
-    if (s == NULL || s->mode != 'w') return Z_STREAM_ERROR;
-
-    s->stream.avail_in = 0; /* should be zero already anyway */
-
-    for (;;) {
-        len = Z_BUFSIZE - s->stream.avail_out;
-
-        if (len != 0) {
-            if ((uInt)fwrite(s->outbuf, 1, len, s->file) != len) {
-                s->z_err = Z_ERRNO;
-                return Z_ERRNO;
-            }
-            s->stream.next_out = s->outbuf;
-            s->stream.avail_out = Z_BUFSIZE;
-        }
-        if (done) break;
-        s->out += s->stream.avail_out;
-        s->z_err = deflate(&(s->stream), flush);
-        s->out -= s->stream.avail_out;
-
-        /* Ignore the second of two consecutive flushes: */
-        if (len == 0 && s->z_err == Z_BUF_ERROR) s->z_err = Z_OK;
-
-        /* deflate has finished flushing only when it hasn't used up
-         * all the available space in the output buffer:
-         */
-        done = (s->stream.avail_out != 0 || s->z_err == Z_STREAM_END);
-
-        if (s->z_err != Z_OK && s->z_err != Z_STREAM_END) break;
-    }
-    return  s->z_err == Z_STREAM_END ? Z_OK : s->z_err;
-}
-
-int ZEXPORT gzflush (file, flush)
-     gzFile file;
-     int flush;
-{
-    gz_stream *s = (gz_stream*)file;
-    int err = do_flush (file, flush);
-
-    if (err) return err;
-    fflush(s->file);
-    return  s->z_err == Z_STREAM_END ? Z_OK : s->z_err;
-}
-#endif /* NO_GZCOMPRESS */
-
-/* ===========================================================================
-      Sets the starting position for the next gzread or gzwrite on the given
-   compressed file. The offset represents a number of bytes in the
-      gzseek returns the resulting offset location as measured in bytes from
-   the beginning of the uncompressed stream, or -1 in case of error.
-      SEEK_END is not implemented, returns error.
-      In this version of the library, gzseek can be extremely slow.
-*/
-z_off_t ZEXPORT gzseek (file, offset, whence)
-    gzFile file;
-    z_off_t offset;
-    int whence;
-{
-    gz_stream *s = (gz_stream*)file;
-
-    if (s == NULL || whence == SEEK_END ||
-        s->z_err == Z_ERRNO || s->z_err == Z_DATA_ERROR) {
-        return -1L;
-    }
-
-    if (s->mode == 'w') {
-#ifdef NO_GZCOMPRESS
-        return -1L;
-#else
-        if (whence == SEEK_SET) {
-            offset -= s->in;
-        }
-        if (offset < 0) return -1L;
-
-        /* At this point, offset is the number of zero bytes to write. */
-        if (s->inbuf == Z_NULL) {
-            s->inbuf = (Byte*)ALLOC(Z_BUFSIZE); /* for seeking */
-            if (s->inbuf == Z_NULL) return -1L;
-            zmemzero(s->inbuf, Z_BUFSIZE);
-        }
-        while (offset > 0)  {
-            uInt size = Z_BUFSIZE;
-            if (offset < Z_BUFSIZE) size = (uInt)offset;
-
-            size = gzwrite(file, s->inbuf, size);
-            if (size == 0) return -1L;
-
-            offset -= size;
-        }
-        return s->in;
-#endif
-    }
-    /* Rest of function is for reading only */
-
-    /* compute absolute position */
-    if (whence == SEEK_CUR) {
-        offset += s->out;
-    }
-    if (offset < 0) return -1L;
-
-    if (s->transparent) {
-        /* map to fseek */
-        s->back = EOF;
-        s->stream.avail_in = 0;
-        s->stream.next_in = s->inbuf;
-        if (fseek(s->file, offset, SEEK_SET) < 0) return -1L;
-
-        s->in = s->out = offset;
-        return offset;
-    }
-
-    /* For a negative seek, rewind and use positive seek */
-    if (offset >= s->out) {
-        offset -= s->out;
-    } else if (gzrewind(file) < 0) {
-        return -1L;
-    }
-    /* offset is now the number of bytes to skip. */
-
-    if (offset != 0 && s->outbuf == Z_NULL) {
-        s->outbuf = (Byte*)ALLOC(Z_BUFSIZE);
-        if (s->outbuf == Z_NULL) return -1L;
-    }
-    if (offset && s->back != EOF) {
-        s->back = EOF;
-        s->out++;
-        offset--;
-        if (s->last) s->z_err = Z_STREAM_END;
-    }
-    while (offset > 0)  {
-        int size = Z_BUFSIZE;
-        if (offset < Z_BUFSIZE) size = (int)offset;
-
-        size = gzread(file, s->outbuf, (uInt)size);
-        if (size <= 0) return -1L;
-        offset -= size;
-    }
-    return s->out;
-}
-
-/* ===========================================================================
-     Rewinds input file.
-*/
-int ZEXPORT gzrewind (file)
-    gzFile file;
-{
-    gz_stream *s = (gz_stream*)file;
-
-    if (s == NULL || s->mode != 'r') return -1;
-
-    s->z_err = Z_OK;
-    s->z_eof = 0;
-    s->back = EOF;
-    s->stream.avail_in = 0;
-    s->stream.next_in = s->inbuf;
-    s->crc = crc32(0L, Z_NULL, 0);
-    if (!s->transparent) (void)inflateReset(&s->stream);
-    s->in = 0;
-    s->out = 0;
-    return fseek(s->file, s->start, SEEK_SET);
-}
-
-/* ===========================================================================
-     Returns the starting position for the next gzread or gzwrite on the
-   given compressed file. This position represents a number of bytes in the
-   uncompressed data stream.
-*/
-z_off_t ZEXPORT gztell (file)
-    gzFile file;
-{
-    return gzseek(file, 0L, SEEK_CUR);
-}
-
-/* ===========================================================================
-     Returns 1 when EOF has previously been detected reading the given
-   input stream, otherwise zero.
-*/
-int ZEXPORT gzeof (file)
-    gzFile file;
-{
-    gz_stream *s = (gz_stream*)file;
-
-    /* With concatenated compressed files that can have embedded
-     * crc trailers, z_eof is no longer the only/best indicator of EOF
-     * on a gz_stream. Handle end-of-stream error explicitly here.
-     */
-    if (s == NULL || s->mode != 'r') return 0;
-    if (s->z_eof) return 1;
-    return s->z_err == Z_STREAM_END;
-}
-
-/* ===========================================================================
-     Returns 1 if reading and doing so transparently, otherwise zero.
-*/
-int ZEXPORT gzdirect (file)
-    gzFile file;
-{
-    gz_stream *s = (gz_stream*)file;
-
-    if (s == NULL || s->mode != 'r') return 0;
-    return s->transparent;
-}
-
-/* ===========================================================================
-   Outputs a long in LSB order to the given file
-*/
-local void putLong (file, x)
-    FILE *file;
-    uLong x;
-{
-    int n;
-    for (n = 0; n < 4; n++) {
-        fputc((int)(x & 0xff), file);
-        x >>= 8;
-    }
-}
-
-/* ===========================================================================
-   Reads a long in LSB order from the given gz_stream. Sets z_err in case
-   of error.
-*/
-local uLong getLong (s)
-    gz_stream *s;
-{
-    uLong x = (uLong)get_byte(s);
-    int c;
-
-    x += ((uLong)get_byte(s))<<8;
-    x += ((uLong)get_byte(s))<<16;
-    c = get_byte(s);
-    if (c == EOF) s->z_err = Z_DATA_ERROR;
-    x += ((uLong)c)<<24;
-    return x;
-}
-
-/* ===========================================================================
-     Flushes all pending output if necessary, closes the compressed file
-   and deallocates all the (de)compression state.
-*/
-int ZEXPORT gzclose (file)
-    gzFile file;
-{
-    gz_stream *s = (gz_stream*)file;
-
-    if (s == NULL) return Z_STREAM_ERROR;
-
-    if (s->mode == 'w') {
-#ifdef NO_GZCOMPRESS
-        return Z_STREAM_ERROR;
-#else
-        if (do_flush (file, Z_FINISH) != Z_OK)
-            return destroy((gz_stream*)file);
-
-        putLong (s->file, s->crc);
-        putLong (s->file, (uLong)(s->in & 0xffffffff));
-#endif
-    }
-    return destroy((gz_stream*)file);
-}
-
-#ifdef STDC
-#  define zstrerror(errnum) strerror(errnum)
-#else
-#  define zstrerror(errnum) ""
-#endif
-
-/* ===========================================================================
-     Returns the error message for the last error which occurred on the
-   given compressed file. errnum is set to zlib error number. If an
-   error occurred in the file system and not in the compression library,
-   errnum is set to Z_ERRNO and the application may consult errno
-   to get the exact error code.
-*/
-const char * ZEXPORT gzerror (file, errnum)
-    gzFile file;
-    int *errnum;
-{
-    char *m;
-    gz_stream *s = (gz_stream*)file;
-
-    if (s == NULL) {
-        *errnum = Z_STREAM_ERROR;
-        return (const char*)ERR_MSG(Z_STREAM_ERROR);
-    }
-    *errnum = s->z_err;
-    if (*errnum == Z_OK) return (const char*)"";
-
-    m = (char*)(*errnum == Z_ERRNO ? zstrerror(errno) : s->stream.msg);
-
-    if (m == NULL || *m == '\0') m = (char*)ERR_MSG(s->z_err);
-
-    TRYFREE(s->msg);
-    s->msg = (char*)ALLOC(strlen(s->path) + strlen(m) + 3);
-    if (s->msg == Z_NULL) return (const char*)ERR_MSG(Z_MEM_ERROR);
-    strcpy(s->msg, s->path);
-    strcat(s->msg, ": ");
-    strcat(s->msg, m);
-    return (const char*)s->msg;
-}
-
-/* ===========================================================================
-     Clear the error and end-of-file flags, and do the same for the real file.
-*/
-void ZEXPORT gzclearerr (file)
-    gzFile file;
-{
-    gz_stream *s = (gz_stream*)file;
-
-    if (s == NULL) return;
-    if (s->z_err != Z_STREAM_END) s->z_err = Z_OK;
-    s->z_eof = 0;
-    clearerr(s->file);
-}
diff --git a/Modules/zlib/gzlib.c b/Modules/zlib/gzlib.c
--- a/Modules/zlib/gzlib.c
+++ b/Modules/zlib/gzlib.c
@@ -1,19 +1,23 @@
 /* gzlib.c -- zlib functions common to reading and writing gzip files
- * Copyright (C) 2004, 2010 Mark Adler
+ * Copyright (C) 2004, 2010, 2011, 2012, 2013 Mark Adler
  * For conditions of distribution and use, see copyright notice in zlib.h
  */
 
 #include "gzguts.h"
 
+#if defined(_WIN32) && !defined(__BORLANDC__)
+#  define LSEEK _lseeki64
+#else
 #if defined(_LARGEFILE64_SOURCE) && _LFS64_LARGEFILE-0
 #  define LSEEK lseek64
 #else
 #  define LSEEK lseek
 #endif
+#endif
 
 /* Local functions */
 local void gz_reset OF((gz_statep));
-local gzFile gz_open OF((const char *, int, const char *));
+local gzFile gz_open OF((const void *, int, const char *));
 
 #if defined UNDER_CE
 
@@ -71,28 +75,40 @@
 local void gz_reset(state)
     gz_statep state;
 {
+    state->x.have = 0;              /* no output data available */
     if (state->mode == GZ_READ) {   /* for reading ... */
-        state->have = 0;            /* no output data available */
         state->eof = 0;             /* not at end of file */
+        state->past = 0;            /* have not read past end yet */
         state->how = LOOK;          /* look for gzip header */
-        state->direct = 1;          /* default for empty file */
     }
     state->seek = 0;                /* no seek request pending */
     gz_error(state, Z_OK, NULL);    /* clear error */
-    state->pos = 0;                 /* no uncompressed data yet */
+    state->x.pos = 0;               /* no uncompressed data yet */
     state->strm.avail_in = 0;       /* no input data yet */
 }
 
 /* Open a gzip file either by name or file descriptor. */
 local gzFile gz_open(path, fd, mode)
-    const char *path;
+    const void *path;
     int fd;
     const char *mode;
 {
     gz_statep state;
+    size_t len;
+    int oflag;
+#ifdef O_CLOEXEC
+    int cloexec = 0;
+#endif
+#ifdef O_EXCL
+    int exclusive = 0;
+#endif
+
+    /* check input */
+    if (path == NULL)
+        return NULL;
 
     /* allocate gzFile structure to return */
-    state = malloc(sizeof(gz_state));
+    state = (gz_statep)malloc(sizeof(gz_state));
     if (state == NULL)
         return NULL;
     state->size = 0;            /* no buffers allocated yet */
@@ -103,6 +119,7 @@
     state->mode = GZ_NONE;
     state->level = Z_DEFAULT_COMPRESSION;
     state->strategy = Z_DEFAULT_STRATEGY;
+    state->direct = 0;
     while (*mode) {
         if (*mode >= '0' && *mode <= '9')
             state->level = *mode - '0';
@@ -124,6 +141,16 @@
                 return NULL;
             case 'b':       /* ignore -- will request binary anyway */
                 break;
+#ifdef O_CLOEXEC
+            case 'e':
+                cloexec = 1;
+                break;
+#endif
+#ifdef O_EXCL
+            case 'x':
+                exclusive = 1;
+                break;
+#endif
             case 'f':
                 state->strategy = Z_FILTERED;
                 break;
@@ -135,6 +162,10 @@
                 break;
             case 'F':
                 state->strategy = Z_FIXED;
+                break;
+            case 'T':
+                state->direct = 1;
+                break;
             default:        /* could consider as an error, but just ignore */
                 ;
             }
@@ -147,30 +178,71 @@
         return NULL;
     }
 
+    /* can't force transparent read */
+    if (state->mode == GZ_READ) {
+        if (state->direct) {
+            free(state);
+            return NULL;
+        }
+        state->direct = 1;      /* for empty file */
+    }
+
     /* save the path name for error messages */
-    state->path = malloc(strlen(path) + 1);
+#ifdef _WIN32
+    if (fd == -2) {
+        len = wcstombs(NULL, path, 0);
+        if (len == (size_t)-1)
+            len = 0;
+    }
+    else
+#endif
+        len = strlen((const char *)path);
+    state->path = (char *)malloc(len + 1);
     if (state->path == NULL) {
         free(state);
         return NULL;
     }
-    strcpy(state->path, path);
+#ifdef _WIN32
+    if (fd == -2)
+        if (len)
+            wcstombs(state->path, path, len + 1);
+        else
+            *(state->path) = 0;
+    else
+#endif
+#if !defined(NO_snprintf) && !defined(NO_vsnprintf)
+        snprintf(state->path, len + 1, "%s", (const char *)path);
+#else
+        strcpy(state->path, path);
+#endif
 
-    /* open the file with the appropriate mode (or just use fd) */
-    state->fd = fd != -1 ? fd :
-        open(path,
+    /* compute the flags for open() */
+    oflag =
 #ifdef O_LARGEFILE
-            O_LARGEFILE |
+        O_LARGEFILE |
 #endif
 #ifdef O_BINARY
-            O_BINARY |
+        O_BINARY |
 #endif
-            (state->mode == GZ_READ ?
-                O_RDONLY :
-                (O_WRONLY | O_CREAT | (
-                    state->mode == GZ_WRITE ?
-                        O_TRUNC :
-                        O_APPEND))),
-            0666);
+#ifdef O_CLOEXEC
+        (cloexec ? O_CLOEXEC : 0) |
+#endif
+        (state->mode == GZ_READ ?
+         O_RDONLY :
+         (O_WRONLY | O_CREAT |
+#ifdef O_EXCL
+          (exclusive ? O_EXCL : 0) |
+#endif
+          (state->mode == GZ_WRITE ?
+           O_TRUNC :
+           O_APPEND)));
+
+    /* open the file with the appropriate flags (or just use fd) */
+    state->fd = fd > -1 ? fd : (
+#ifdef _WIN32
+        fd == -2 ? _wopen(path, oflag, 0666) :
+#endif
+        open((const char *)path, oflag, 0666));
     if (state->fd == -1) {
         free(state->path);
         free(state);
@@ -216,15 +288,29 @@
     char *path;         /* identifier for error messages */
     gzFile gz;
 
-    if (fd == -1 || (path = malloc(7 + 3 * sizeof(int))) == NULL)
+    if (fd == -1 || (path = (char *)malloc(7 + 3 * sizeof(int))) == NULL)
         return NULL;
+#if !defined(NO_snprintf) && !defined(NO_vsnprintf)
+    snprintf(path, 7 + 3 * sizeof(int), "<fd:%d>", fd); /* for debugging */
+#else
     sprintf(path, "<fd:%d>", fd);   /* for debugging */
+#endif
     gz = gz_open(path, fd, mode);
     free(path);
     return gz;
 }
 
 /* -- see zlib.h -- */
+#ifdef _WIN32
+gzFile ZEXPORT gzopen_w(path, mode)
+    const wchar_t *path;
+    const char *mode;
+{
+    return gz_open(path, -2, mode);
+}
+#endif
+
+/* -- see zlib.h -- */
 int ZEXPORT gzbuffer(file, size)
     gzFile file;
     unsigned size;
@@ -243,8 +329,8 @@
         return -1;
 
     /* check and set requested size */
-    if (size == 0)
-        return -1;
+    if (size < 2)
+        size = 2;               /* need two bytes to check magic header */
     state->want = size;
     return 0;
 }
@@ -261,7 +347,8 @@
     state = (gz_statep)file;
 
     /* check that we're reading and that there's no error */
-    if (state->mode != GZ_READ || state->err != Z_OK)
+    if (state->mode != GZ_READ ||
+            (state->err != Z_OK && state->err != Z_BUF_ERROR))
         return -1;
 
     /* back up and start over */
@@ -289,7 +376,7 @@
         return -1;
 
     /* check that there's no error */
-    if (state->err != Z_OK)
+    if (state->err != Z_OK && state->err != Z_BUF_ERROR)
         return -1;
 
     /* can only seek from start or relative to current position */
@@ -298,31 +385,32 @@
 
     /* normalize offset to a SEEK_CUR specification */
     if (whence == SEEK_SET)
-        offset -= state->pos;
+        offset -= state->x.pos;
     else if (state->seek)
         offset += state->skip;
     state->seek = 0;
 
     /* if within raw area while reading, just go there */
     if (state->mode == GZ_READ && state->how == COPY &&
-        state->pos + offset >= state->raw) {
-        ret = LSEEK(state->fd, offset - state->have, SEEK_CUR);
+            state->x.pos + offset >= 0) {
+        ret = LSEEK(state->fd, offset - state->x.have, SEEK_CUR);
         if (ret == -1)
             return -1;
-        state->have = 0;
+        state->x.have = 0;
         state->eof = 0;
+        state->past = 0;
         state->seek = 0;
         gz_error(state, Z_OK, NULL);
         state->strm.avail_in = 0;
-        state->pos += offset;
-        return state->pos;
+        state->x.pos += offset;
+        return state->x.pos;
     }
 
     /* calculate skip amount, rewinding if needed for back seek when reading */
     if (offset < 0) {
         if (state->mode != GZ_READ)         /* writing -- can't go backwards */
             return -1;
-        offset += state->pos;
+        offset += state->x.pos;
         if (offset < 0)                     /* before start of file! */
             return -1;
         if (gzrewind(file) == -1)           /* rewind, then skip to offset */
@@ -331,11 +419,11 @@
 
     /* if reading, skip what's in output buffer (one less gzgetc() check) */
     if (state->mode == GZ_READ) {
-        n = GT_OFF(state->have) || (z_off64_t)state->have > offset ?
-            (unsigned)offset : state->have;
-        state->have -= n;
-        state->next += n;
-        state->pos += n;
+        n = GT_OFF(state->x.have) || (z_off64_t)state->x.have > offset ?
+            (unsigned)offset : state->x.have;
+        state->x.have -= n;
+        state->x.next += n;
+        state->x.pos += n;
         offset -= n;
     }
 
@@ -344,7 +432,7 @@
         state->seek = 1;
         state->skip = offset;
     }
-    return state->pos + offset;
+    return state->x.pos + offset;
 }
 
 /* -- see zlib.h -- */
@@ -373,7 +461,7 @@
         return -1;
 
     /* return position */
-    return state->pos + (state->seek ? state->skip : 0);
+    return state->x.pos + (state->seek ? state->skip : 0);
 }
 
 /* -- see zlib.h -- */
@@ -433,8 +521,7 @@
         return 0;
 
     /* return end-of-file state */
-    return state->mode == GZ_READ ?
-        (state->eof && state->strm.avail_in == 0 && state->have == 0) : 0;
+    return state->mode == GZ_READ ? state->past : 0;
 }
 
 /* -- see zlib.h -- */
@@ -454,7 +541,8 @@
     /* return error information */
     if (errnum != NULL)
         *errnum = state->err;
-    return state->msg == NULL ? "" : state->msg;
+    return state->err == Z_MEM_ERROR ? "out of memory" :
+                                       (state->msg == NULL ? "" : state->msg);
 }
 
 /* -- see zlib.h -- */
@@ -471,8 +559,10 @@
         return;
 
     /* clear error and end-of-file */
-    if (state->mode == GZ_READ)
+    if (state->mode == GZ_READ) {
         state->eof = 0;
+        state->past = 0;
+    }
     gz_error(state, Z_OK, NULL);
 }
 
@@ -494,26 +584,33 @@
         state->msg = NULL;
     }
 
+    /* if fatal, set state->x.have to 0 so that the gzgetc() macro fails */
+    if (err != Z_OK && err != Z_BUF_ERROR)
+        state->x.have = 0;
+
     /* set error code, and if no message, then done */
     state->err = err;
     if (msg == NULL)
         return;
 
-    /* for an out of memory error, save as static string */
-    if (err == Z_MEM_ERROR) {
-        state->msg = (char *)msg;
+    /* for an out of memory error, return literal string when requested */
+    if (err == Z_MEM_ERROR)
+        return;
+
+    /* construct error message with path */
+    if ((state->msg = (char *)malloc(strlen(state->path) + strlen(msg) + 3)) ==
+            NULL) {
+        state->err = Z_MEM_ERROR;
         return;
     }
-
-    /* construct error message with path */
-    if ((state->msg = malloc(strlen(state->path) + strlen(msg) + 3)) == NULL) {
-        state->err = Z_MEM_ERROR;
-        state->msg = (char *)"out of memory";
-        return;
-    }
+#if !defined(NO_snprintf) && !defined(NO_vsnprintf)
+    snprintf(state->msg, strlen(state->path) + strlen(msg) + 3,
+             "%s%s%s", state->path, ": ", msg);
+#else
     strcpy(state->msg, state->path);
     strcat(state->msg, ": ");
     strcat(state->msg, msg);
+#endif
     return;
 }
 
diff --git a/Modules/zlib/gzread.c b/Modules/zlib/gzread.c
--- a/Modules/zlib/gzread.c
+++ b/Modules/zlib/gzread.c
@@ -1,5 +1,5 @@
 /* gzread.c -- zlib functions for reading gzip files
- * Copyright (C) 2004, 2005, 2010 Mark Adler
+ * Copyright (C) 2004, 2005, 2010, 2011, 2012, 2013 Mark Adler
  * For conditions of distribution and use, see copyright notice in zlib.h
  */
 
@@ -8,10 +8,9 @@
 /* Local functions */
 local int gz_load OF((gz_statep, unsigned char *, unsigned, unsigned *));
 local int gz_avail OF((gz_statep));
-local int gz_next4 OF((gz_statep, unsigned long *));
-local int gz_head OF((gz_statep));
+local int gz_look OF((gz_statep));
 local int gz_decomp OF((gz_statep));
-local int gz_make OF((gz_statep));
+local int gz_fetch OF((gz_statep));
 local int gz_skip OF((gz_statep, z_off64_t));
 
 /* Use read() to load a buffer -- return -1 on error, otherwise 0.  Read from
@@ -46,73 +45,54 @@
    error, 0 otherwise.  Note that the eof flag is set when the end of the input
    file is reached, even though there may be unused data in the buffer.  Once
    that data has been used, no more attempts will be made to read the file.
-   gz_avail() assumes that strm->avail_in == 0. */
+   If strm->avail_in != 0, then the current data is moved to the beginning of
+   the input buffer, and then the remainder of the buffer is loaded with the
+   available data from the input file. */
 local int gz_avail(state)
     gz_statep state;
 {
+    unsigned got;
     z_streamp strm = &(state->strm);
 
-    if (state->err != Z_OK)
+    if (state->err != Z_OK && state->err != Z_BUF_ERROR)
         return -1;
     if (state->eof == 0) {
-        if (gz_load(state, state->in, state->size,
-                (unsigned *)&(strm->avail_in)) == -1)
+        if (strm->avail_in) {       /* copy what's there to the start */
+            unsigned char *p = state->in;
+            unsigned const char *q = strm->next_in;
+            unsigned n = strm->avail_in;
+            do {
+                *p++ = *q++;
+            } while (--n);
+        }
+        if (gz_load(state, state->in + strm->avail_in,
+                    state->size - strm->avail_in, &got) == -1)
             return -1;
+        strm->avail_in += got;
         strm->next_in = state->in;
     }
     return 0;
 }
 
-/* Get next byte from input, or -1 if end or error. */
-#define NEXT() ((strm->avail_in == 0 && gz_avail(state) == -1) ? -1 : \
-                (strm->avail_in == 0 ? -1 : \
-                 (strm->avail_in--, *(strm->next_in)++)))
-
-/* Get a four-byte little-endian integer and return 0 on success and the value
-   in *ret.  Otherwise -1 is returned and *ret is not modified. */
-local int gz_next4(state, ret)
-    gz_statep state;
-    unsigned long *ret;
-{
-    int ch;
-    unsigned long val;
-    z_streamp strm = &(state->strm);
-
-    val = NEXT();
-    val += (unsigned)NEXT() << 8;
-    val += (unsigned long)NEXT() << 16;
-    ch = NEXT();
-    if (ch == -1)
-        return -1;
-    val += (unsigned long)ch << 24;
-    *ret = val;
-    return 0;
-}
-
-/* Look for gzip header, set up for inflate or copy.  state->have must be zero.
+/* Look for gzip header, set up for inflate or copy.  state->x.have must be 0.
    If this is the first time in, allocate required memory.  state->how will be
    left unchanged if there is no more input data available, will be set to COPY
    if there is no gzip header and direct copying will be performed, or it will
-   be set to GZIP for decompression, and the gzip header will be skipped so
-   that the next available input data is the raw deflate stream.  If direct
-   copying, then leftover input data from the input buffer will be copied to
-   the output buffer.  In that case, all further file reads will be directly to
-   either the output buffer or a user buffer.  If decompressing, the inflate
-   state and the check value will be initialized.  gz_head() will return 0 on
-   success or -1 on failure.  Failures may include read errors or gzip header
-   errors.  */
-local int gz_head(state)
+   be set to GZIP for decompression.  If direct copying, then leftover input
+   data from the input buffer will be copied to the output buffer.  In that
+   case, all further file reads will be directly to either the output buffer or
+   a user buffer.  If decompressing, the inflate state will be initialized.
+   gz_look() will return 0 on success or -1 on failure. */
+local int gz_look(state)
     gz_statep state;
 {
     z_streamp strm = &(state->strm);
-    int flags;
-    unsigned len;
 
     /* allocate read buffers and inflate memory */
     if (state->size == 0) {
         /* allocate buffers */
-        state->in = malloc(state->want);
-        state->out = malloc(state->want << 1);
+        state->in = (unsigned char *)malloc(state->want);
+        state->out = (unsigned char *)malloc(state->want << 1);
         if (state->in == NULL || state->out == NULL) {
             if (state->out != NULL)
                 free(state->out);
@@ -129,7 +109,7 @@
         state->strm.opaque = Z_NULL;
         state->strm.avail_in = 0;
         state->strm.next_in = Z_NULL;
-        if (inflateInit2(&(state->strm), -15) != Z_OK) {    /* raw inflate */
+        if (inflateInit2(&(state->strm), 15 + 16) != Z_OK) {    /* gunzip */
             free(state->out);
             free(state->in);
             state->size = 0;
@@ -138,83 +118,45 @@
         }
     }
 
-    /* get some data in the input buffer */
-    if (strm->avail_in == 0) {
+    /* get at least the magic bytes in the input buffer */
+    if (strm->avail_in < 2) {
         if (gz_avail(state) == -1)
             return -1;
         if (strm->avail_in == 0)
             return 0;
     }
 
-    /* look for the gzip magic header bytes 31 and 139 */
-    if (strm->next_in[0] == 31) {
-        strm->avail_in--;
-        strm->next_in++;
-        if (strm->avail_in == 0 && gz_avail(state) == -1)
-            return -1;
-        if (strm->avail_in && strm->next_in[0] == 139) {
-            /* we have a gzip header, woo hoo! */
-            strm->avail_in--;
-            strm->next_in++;
-
-            /* skip rest of header */
-            if (NEXT() != 8) {      /* compression method */
-                gz_error(state, Z_DATA_ERROR, "unknown compression method");
-                return -1;
-            }
-            flags = NEXT();
-            if (flags & 0xe0) {     /* reserved flag bits */
-                gz_error(state, Z_DATA_ERROR, "unknown header flags set");
-                return -1;
-            }
-            NEXT();                 /* modification time */
-            NEXT();
-            NEXT();
-            NEXT();
-            NEXT();                 /* extra flags */
-            NEXT();                 /* operating system */
-            if (flags & 4) {        /* extra field */
-                len = (unsigned)NEXT();
-                len += (unsigned)NEXT() << 8;
-                while (len--)
-                    if (NEXT() < 0)
-                        break;
-            }
-            if (flags & 8)          /* file name */
-                while (NEXT() > 0)
-                    ;
-            if (flags & 16)         /* comment */
-                while (NEXT() > 0)
-                    ;
-            if (flags & 2) {        /* header crc */
-                NEXT();
-                NEXT();
-            }
-            /* an unexpected end of file is not checked for here -- it will be
-               noticed on the first request for uncompressed data */
-
-            /* set up for decompression */
-            inflateReset(strm);
-            strm->adler = crc32(0L, Z_NULL, 0);
-            state->how = GZIP;
-            state->direct = 0;
-            return 0;
-        }
-        else {
-            /* not a gzip file -- save first byte (31) and fall to raw i/o */
-            state->out[0] = 31;
-            state->have = 1;
-        }
+    /* look for gzip magic bytes -- if there, do gzip decoding (note: there is
+       a logical dilemma here when considering the case of a partially written
+       gzip file, to wit, if a single 31 byte is written, then we cannot tell
+       whether this is a single-byte file, or just a partially written gzip
+       file -- for here we assume that if a gzip file is being written, then
+       the header will be written in a single operation, so that reading a
+       single byte is sufficient indication that it is not a gzip file) */
+    if (strm->avail_in > 1 &&
+            strm->next_in[0] == 31 && strm->next_in[1] == 139) {
+        inflateReset(strm);
+        state->how = GZIP;
+        state->direct = 0;
+        return 0;
     }
 
-    /* doing raw i/o, save start of raw data for seeking, copy any leftover
-       input to output -- this assumes that the output buffer is larger than
-       the input buffer, which also assures space for gzungetc() */
-    state->raw = state->pos;
-    state->next = state->out;
+    /* no gzip header -- if we were decoding gzip before, then this is trailing
+       garbage.  Ignore the trailing garbage and finish. */
+    if (state->direct == 0) {
+        strm->avail_in = 0;
+        state->eof = 1;
+        state->x.have = 0;
+        return 0;
+    }
+
+    /* doing raw i/o, copy any leftover input to output -- this assumes that
+       the output buffer is larger than the input buffer, which also assures
+       space for gzungetc() */
+    state->x.next = state->out;
     if (strm->avail_in) {
-        memcpy(state->next + state->have, strm->next_in, strm->avail_in);
-        state->have += strm->avail_in;
+        memcpy(state->x.next, strm->next_in, strm->avail_in);
+        state->x.have = strm->avail_in;
         strm->avail_in = 0;
     }
     state->how = COPY;
@@ -223,19 +165,15 @@
 }
 
 /* Decompress from input to the provided next_out and avail_out in the state.
-   If the end of the compressed data is reached, then verify the gzip trailer
-   check value and length (modulo 2^32).  state->have and state->next are set
-   to point to the just decompressed data, and the crc is updated.  If the
-   trailer is verified, state->how is reset to LOOK to look for the next gzip
-   stream or raw data, once state->have is depleted.  Returns 0 on success, -1
-   on failure.  Failures may include invalid compressed data or a failed gzip
-   trailer verification. */
+   On return, state->x.have and state->x.next point to the just decompressed
+   data.  If the gzip stream completes, state->how is reset to LOOK to look for
+   the next gzip stream or raw data, once state->x.have is depleted.  Returns 0
+   on success, -1 on failure. */
 local int gz_decomp(state)
     gz_statep state;
 {
-    int ret;
+    int ret = Z_OK;
     unsigned had;
-    unsigned long crc, len;
     z_streamp strm = &(state->strm);
 
     /* fill output buffer up to end of deflate stream */
@@ -245,15 +183,15 @@
         if (strm->avail_in == 0 && gz_avail(state) == -1)
             return -1;
         if (strm->avail_in == 0) {
-            gz_error(state, Z_DATA_ERROR, "unexpected end of file");
-            return -1;
+            gz_error(state, Z_BUF_ERROR, "unexpected end of file");
+            break;
         }
 
         /* decompress and handle errors */
         ret = inflate(strm, Z_NO_FLUSH);
         if (ret == Z_STREAM_ERROR || ret == Z_NEED_DICT) {
             gz_error(state, Z_STREAM_ERROR,
-                      "internal error: inflate stream corrupt");
+                     "internal error: inflate stream corrupt");
             return -1;
         }
         if (ret == Z_MEM_ERROR) {
@@ -262,67 +200,55 @@
         }
         if (ret == Z_DATA_ERROR) {              /* deflate stream invalid */
             gz_error(state, Z_DATA_ERROR,
-                      strm->msg == NULL ? "compressed data error" : strm->msg);
+                     strm->msg == NULL ? "compressed data error" : strm->msg);
             return -1;
         }
     } while (strm->avail_out && ret != Z_STREAM_END);
 
-    /* update available output and crc check value */
-    state->have = had - strm->avail_out;
-    state->next = strm->next_out - state->have;
-    strm->adler = crc32(strm->adler, state->next, state->have);
+    /* update available output */
+    state->x.have = had - strm->avail_out;
+    state->x.next = strm->next_out - state->x.have;
 
-    /* check gzip trailer if at end of deflate stream */
-    if (ret == Z_STREAM_END) {
-        if (gz_next4(state, &crc) == -1 || gz_next4(state, &len) == -1) {
-            gz_error(state, Z_DATA_ERROR, "unexpected end of file");
-            return -1;
-        }
-        if (crc != strm->adler) {
-            gz_error(state, Z_DATA_ERROR, "incorrect data check");
-            return -1;
-        }
-        if (len != (strm->total_out & 0xffffffffL)) {
-            gz_error(state, Z_DATA_ERROR, "incorrect length check");
-            return -1;
-        }
-        state->how = LOOK;      /* ready for next stream, once have is 0 (leave
-                                   state->direct unchanged to remember how) */
-    }
+    /* if the gzip stream completed successfully, look for another */
+    if (ret == Z_STREAM_END)
+        state->how = LOOK;
 
     /* good decompression */
     return 0;
 }
 
-/* Make data and put in the output buffer.  Assumes that state->have == 0.
+/* Fetch data and put it in the output buffer.  Assumes state->x.have is 0.
    Data is either copied from the input file or decompressed from the input
    file depending on state->how.  If state->how is LOOK, then a gzip header is
-   looked for (and skipped if found) to determine wither to copy or decompress.
-   Returns -1 on error, otherwise 0.  gz_make() will leave state->have as COPY
-   or GZIP unless the end of the input file has been reached and all data has
-   been processed.  */
-local int gz_make(state)
+   looked for to determine whether to copy or decompress.  Returns -1 on error,
+   otherwise 0.  gz_fetch() will leave state->how as COPY or GZIP unless the
+   end of the input file has been reached and all data has been processed.  */
+local int gz_fetch(state)
     gz_statep state;
 {
     z_streamp strm = &(state->strm);
 
-    if (state->how == LOOK) {           /* look for gzip header */
-        if (gz_head(state) == -1)
-            return -1;
-        if (state->have)                /* got some data from gz_head() */
+    do {
+        switch(state->how) {
+        case LOOK:      /* -> LOOK, COPY (only if never GZIP), or GZIP */
+            if (gz_look(state) == -1)
+                return -1;
+            if (state->how == LOOK)
+                return 0;
+            break;
+        case COPY:      /* -> COPY */
+            if (gz_load(state, state->out, state->size << 1, &(state->x.have))
+                    == -1)
+                return -1;
+            state->x.next = state->out;
             return 0;
-    }
-    if (state->how == COPY) {           /* straight copy */
-        if (gz_load(state, state->out, state->size << 1, &(state->have)) == -1)
-            return -1;
-        state->next = state->out;
-    }
-    else if (state->how == GZIP) {      /* decompress */
-        strm->avail_out = state->size << 1;
-        strm->next_out = state->out;
-        if (gz_decomp(state) == -1)
-            return -1;
-    }
+        case GZIP:      /* -> GZIP or LOOK (if end of gzip stream) */
+            strm->avail_out = state->size << 1;
+            strm->next_out = state->out;
+            if (gz_decomp(state) == -1)
+                return -1;
+        }
+    } while (state->x.have == 0 && (!state->eof || strm->avail_in));
     return 0;
 }
 
@@ -336,12 +262,12 @@
     /* skip over len bytes or reach end-of-file, whichever comes first */
     while (len)
         /* skip over whatever is in output buffer */
-        if (state->have) {
-            n = GT_OFF(state->have) || (z_off64_t)state->have > len ?
-                (unsigned)len : state->have;
-            state->have -= n;
-            state->next += n;
-            state->pos += n;
+        if (state->x.have) {
+            n = GT_OFF(state->x.have) || (z_off64_t)state->x.have > len ?
+                (unsigned)len : state->x.have;
+            state->x.have -= n;
+            state->x.next += n;
+            state->x.pos += n;
             len -= n;
         }
 
@@ -352,7 +278,7 @@
         /* need more data to skip -- load up output buffer */
         else {
             /* get more output, looking for header if required */
-            if (gz_make(state) == -1)
+            if (gz_fetch(state) == -1)
                 return -1;
         }
     return 0;
@@ -374,14 +300,15 @@
     state = (gz_statep)file;
     strm = &(state->strm);
 
-    /* check that we're reading and that there's no error */
-    if (state->mode != GZ_READ || state->err != Z_OK)
+    /* check that we're reading and that there's no (serious) error */
+    if (state->mode != GZ_READ ||
+            (state->err != Z_OK && state->err != Z_BUF_ERROR))
         return -1;
 
     /* since an int is returned, make sure len fits in one, otherwise return
        with an error (this avoids the flaw in the interface) */
     if ((int)len < 0) {
-        gz_error(state, Z_BUF_ERROR, "requested length does not fit in int");
+        gz_error(state, Z_DATA_ERROR, "requested length does not fit in int");
         return -1;
     }
 
@@ -400,49 +327,51 @@
     got = 0;
     do {
         /* first just try copying data from the output buffer */
-        if (state->have) {
-            n = state->have > len ? len : state->have;
-            memcpy(buf, state->next, n);
-            state->next += n;
-            state->have -= n;
+        if (state->x.have) {
+            n = state->x.have > len ? len : state->x.have;
+            memcpy(buf, state->x.next, n);
+            state->x.next += n;
+            state->x.have -= n;
         }
 
         /* output buffer empty -- return if we're at the end of the input */
-        else if (state->eof && strm->avail_in == 0)
+        else if (state->eof && strm->avail_in == 0) {
+            state->past = 1;        /* tried to read past end */
             break;
+        }
 
         /* need output data -- for small len or new stream load up our output
            buffer */
         else if (state->how == LOOK || len < (state->size << 1)) {
             /* get more output, looking for header if required */
-            if (gz_make(state) == -1)
+            if (gz_fetch(state) == -1)
                 return -1;
-            continue;       /* no progress yet -- go back to memcpy() above */
+            continue;       /* no progress yet -- go back to copy above */
             /* the copy above assures that we will leave with space in the
                output buffer, allowing at least one gzungetc() to succeed */
         }
 
         /* large len -- read directly into user buffer */
         else if (state->how == COPY) {      /* read directly */
-            if (gz_load(state, buf, len, &n) == -1)
+            if (gz_load(state, (unsigned char *)buf, len, &n) == -1)
                 return -1;
         }
 
         /* large len -- decompress directly into user buffer */
         else {  /* state->how == GZIP */
             strm->avail_out = len;
-            strm->next_out = buf;
+            strm->next_out = (unsigned char *)buf;
             if (gz_decomp(state) == -1)
                 return -1;
-            n = state->have;
-            state->have = 0;
+            n = state->x.have;
+            state->x.have = 0;
         }
 
         /* update progress */
         len -= n;
         buf = (char *)buf + n;
         got += n;
-        state->pos += n;
+        state->x.pos += n;
     } while (len);
 
     /* return number of bytes read into user buffer (will fit in int) */
@@ -450,6 +379,11 @@
 }
 
 /* -- see zlib.h -- */
+#ifdef Z_PREFIX_SET
+#  undef z_gzgetc
+#else
+#  undef gzgetc
+#endif
 int ZEXPORT gzgetc(file)
     gzFile file;
 {
@@ -462,15 +396,16 @@
         return -1;
     state = (gz_statep)file;
 
-    /* check that we're reading and that there's no error */
-    if (state->mode != GZ_READ || state->err != Z_OK)
+    /* check that we're reading and that there's no (serious) error */
+    if (state->mode != GZ_READ ||
+        (state->err != Z_OK && state->err != Z_BUF_ERROR))
         return -1;
 
     /* try output buffer (no need to check for skip request) */
-    if (state->have) {
-        state->have--;
-        state->pos++;
-        return *(state->next)++;
+    if (state->x.have) {
+        state->x.have--;
+        state->x.pos++;
+        return *(state->x.next)++;
     }
 
     /* nothing there -- try gzread() */
@@ -478,6 +413,12 @@
     return ret < 1 ? -1 : buf[0];
 }
 
+int ZEXPORT gzgetc_(file)
+gzFile file;
+{
+    return gzgetc(file);
+}
+
 /* -- see zlib.h -- */
 int ZEXPORT gzungetc(c, file)
     int c;
@@ -490,8 +431,9 @@
         return -1;
     state = (gz_statep)file;
 
-    /* check that we're reading and that there's no error */
-    if (state->mode != GZ_READ || state->err != Z_OK)
+    /* check that we're reading and that there's no (serious) error */
+    if (state->mode != GZ_READ ||
+        (state->err != Z_OK && state->err != Z_BUF_ERROR))
         return -1;
 
     /* process a skip request */
@@ -506,32 +448,34 @@
         return -1;
 
     /* if output buffer empty, put byte at end (allows more pushing) */
-    if (state->have == 0) {
-        state->have = 1;
-        state->next = state->out + (state->size << 1) - 1;
-        state->next[0] = c;
-        state->pos--;
+    if (state->x.have == 0) {
+        state->x.have = 1;
+        state->x.next = state->out + (state->size << 1) - 1;
+        state->x.next[0] = c;
+        state->x.pos--;
+        state->past = 0;
         return c;
     }
 
     /* if no room, give up (must have already done a gzungetc()) */
-    if (state->have == (state->size << 1)) {
-        gz_error(state, Z_BUF_ERROR, "out of room to push characters");
+    if (state->x.have == (state->size << 1)) {
+        gz_error(state, Z_DATA_ERROR, "out of room to push characters");
         return -1;
     }
 
     /* slide output data if needed and insert byte before existing data */
-    if (state->next == state->out) {
-        unsigned char *src = state->out + state->have;
+    if (state->x.next == state->out) {
+        unsigned char *src = state->out + state->x.have;
         unsigned char *dest = state->out + (state->size << 1);
         while (src > state->out)
             *--dest = *--src;
-        state->next = dest;
+        state->x.next = dest;
     }
-    state->have++;
-    state->next--;
-    state->next[0] = c;
-    state->pos--;
+    state->x.have++;
+    state->x.next--;
+    state->x.next[0] = c;
+    state->x.pos--;
+    state->past = 0;
     return c;
 }
 
@@ -551,8 +495,9 @@
         return NULL;
     state = (gz_statep)file;
 
-    /* check that we're reading and that there's no error */
-    if (state->mode != GZ_READ || state->err != Z_OK)
+    /* check that we're reading and that there's no (serious) error */
+    if (state->mode != GZ_READ ||
+        (state->err != Z_OK && state->err != Z_BUF_ERROR))
         return NULL;
 
     /* process a skip request */
@@ -569,32 +514,31 @@
     left = (unsigned)len - 1;
     if (left) do {
         /* assure that something is in the output buffer */
-        if (state->have == 0) {
-            if (gz_make(state) == -1)
-                return NULL;            /* error */
-            if (state->have == 0) {     /* end of file */
-                if (buf == str)         /* got bupkus */
-                    return NULL;
-                break;                  /* got something -- return it */
-            }
+        if (state->x.have == 0 && gz_fetch(state) == -1)
+            return NULL;                /* error */
+        if (state->x.have == 0) {       /* end of file */
+            state->past = 1;            /* read past end */
+            break;                      /* return what we have */
         }
 
         /* look for end-of-line in current output buffer */
-        n = state->have > left ? left : state->have;
-        eol = memchr(state->next, '\n', n);
+        n = state->x.have > left ? left : state->x.have;
+        eol = (unsigned char *)memchr(state->x.next, '\n', n);
         if (eol != NULL)
-            n = (unsigned)(eol - state->next) + 1;
+            n = (unsigned)(eol - state->x.next) + 1;
 
         /* copy through end-of-line, or remainder if not found */
-        memcpy(buf, state->next, n);
-        state->have -= n;
-        state->next += n;
-        state->pos += n;
+        memcpy(buf, state->x.next, n);
+        state->x.have -= n;
+        state->x.next += n;
+        state->x.pos += n;
         left -= n;
         buf += n;
     } while (left && eol == NULL);
 
-    /* found end-of-line or out of space -- terminate string and return it */
+    /* return terminated string, or if nothing, end of file */
+    if (buf == str)
+        return NULL;
     buf[0] = 0;
     return str;
 }
@@ -610,16 +554,12 @@
         return 0;
     state = (gz_statep)file;
 
-    /* check that we're reading */
-    if (state->mode != GZ_READ)
-        return 0;
-
     /* if the state is not known, but we can find out, then do so (this is
        mainly for right after a gzopen() or gzdopen()) */
-    if (state->how == LOOK && state->have == 0)
-        (void)gz_head(state);
+    if (state->mode == GZ_READ && state->how == LOOK && state->x.have == 0)
+        (void)gz_look(state);
 
-    /* return 1 if reading direct, 0 if decompressing a gzip stream */
+    /* return 1 if transparent, 0 if processing a gzip stream */
     return state->direct;
 }
 
@@ -627,7 +567,7 @@
 int ZEXPORT gzclose_r(file)
     gzFile file;
 {
-    int ret;
+    int ret, err;
     gz_statep state;
 
     /* get internal structure */
@@ -645,9 +585,10 @@
         free(state->out);
         free(state->in);
     }
+    err = state->err == Z_BUF_ERROR ? Z_BUF_ERROR : Z_OK;
     gz_error(state, Z_OK, NULL);
     free(state->path);
     ret = close(state->fd);
     free(state);
-    return ret ? Z_ERRNO : Z_OK;
+    return ret ? Z_ERRNO : err;
 }
diff --git a/Modules/zlib/gzwrite.c b/Modules/zlib/gzwrite.c
--- a/Modules/zlib/gzwrite.c
+++ b/Modules/zlib/gzwrite.c
@@ -1,5 +1,5 @@
 /* gzwrite.c -- zlib functions for writing gzip files
- * Copyright (C) 2004, 2005, 2010 Mark Adler
+ * Copyright (C) 2004, 2005, 2010, 2011, 2012, 2013 Mark Adler
  * For conditions of distribution and use, see copyright notice in zlib.h
  */
 
@@ -18,44 +18,55 @@
     int ret;
     z_streamp strm = &(state->strm);
 
-    /* allocate input and output buffers */
-    state->in = malloc(state->want);
-    state->out = malloc(state->want);
-    if (state->in == NULL || state->out == NULL) {
-        if (state->out != NULL)
-            free(state->out);
-        if (state->in != NULL)
-            free(state->in);
+    /* allocate input buffer */
+    state->in = (unsigned char *)malloc(state->want);
+    if (state->in == NULL) {
         gz_error(state, Z_MEM_ERROR, "out of memory");
         return -1;
     }
 
-    /* allocate deflate memory, set up for gzip compression */
-    strm->zalloc = Z_NULL;
-    strm->zfree = Z_NULL;
-    strm->opaque = Z_NULL;
-    ret = deflateInit2(strm, state->level, Z_DEFLATED,
-                       15 + 16, 8, state->strategy);
-    if (ret != Z_OK) {
-        free(state->in);
-        gz_error(state, Z_MEM_ERROR, "out of memory");
-        return -1;
+    /* only need output buffer and deflate state if compressing */
+    if (!state->direct) {
+        /* allocate output buffer */
+        state->out = (unsigned char *)malloc(state->want);
+        if (state->out == NULL) {
+            free(state->in);
+            gz_error(state, Z_MEM_ERROR, "out of memory");
+            return -1;
+        }
+
+        /* allocate deflate memory, set up for gzip compression */
+        strm->zalloc = Z_NULL;
+        strm->zfree = Z_NULL;
+        strm->opaque = Z_NULL;
+        ret = deflateInit2(strm, state->level, Z_DEFLATED,
+                           MAX_WBITS + 16, DEF_MEM_LEVEL, state->strategy);
+        if (ret != Z_OK) {
+            free(state->out);
+            free(state->in);
+            gz_error(state, Z_MEM_ERROR, "out of memory");
+            return -1;
+        }
     }
 
     /* mark state as initialized */
     state->size = state->want;
 
-    /* initialize write buffer */
-    strm->avail_out = state->size;
-    strm->next_out = state->out;
-    state->next = strm->next_out;
+    /* initialize write buffer if compressing */
+    if (!state->direct) {
+        strm->avail_out = state->size;
+        strm->next_out = state->out;
+        state->x.next = strm->next_out;
+    }
     return 0;
 }
 
 /* Compress whatever is at avail_in and next_in and write to the output file.
    Return -1 if there is an error writing to the output file, otherwise 0.
    flush is assumed to be a valid deflate() flush value.  If flush is Z_FINISH,
-   then the deflate() state is reset to start a new gzip stream. */
+   then the deflate() state is reset to start a new gzip stream.  If gz->direct
+   is true, then simply write to the output file without compressing, and
+   ignore flush. */
 local int gz_comp(state, flush)
     gz_statep state;
     int flush;
@@ -68,6 +79,17 @@
     if (state->size == 0 && gz_init(state) == -1)
         return -1;
 
+    /* write directly if requested */
+    if (state->direct) {
+        got = write(state->fd, strm->next_in, strm->avail_in);
+        if (got < 0 || (unsigned)got != strm->avail_in) {
+            gz_error(state, Z_ERRNO, zstrerror());
+            return -1;
+        }
+        strm->avail_in = 0;
+        return 0;
+    }
+
     /* run deflate() on provided input until it produces no more output */
     ret = Z_OK;
     do {
@@ -75,8 +97,8 @@
            doing Z_FINISH then don't write until we get to Z_STREAM_END */
         if (strm->avail_out == 0 || (flush != Z_NO_FLUSH &&
             (flush != Z_FINISH || ret == Z_STREAM_END))) {
-            have = (unsigned)(strm->next_out - state->next);
-            if (have && ((got = write(state->fd, state->next, have)) < 0 ||
+            have = (unsigned)(strm->next_out - state->x.next);
+            if (have && ((got = write(state->fd, state->x.next, have)) < 0 ||
                          (unsigned)got != have)) {
                 gz_error(state, Z_ERRNO, zstrerror());
                 return -1;
@@ -85,7 +107,7 @@
                 strm->avail_out = state->size;
                 strm->next_out = state->out;
             }
-            state->next = strm->next_out;
+            state->x.next = strm->next_out;
         }
 
         /* compress */
@@ -131,7 +153,7 @@
         }
         strm->avail_in = n;
         strm->next_in = state->in;
-        state->pos += n;
+        state->x.pos += n;
         if (gz_comp(state, Z_NO_FLUSH) == -1)
             return -1;
         len -= n;
@@ -146,7 +168,6 @@
     unsigned len;
 {
     unsigned put = len;
-    unsigned n;
     gz_statep state;
     z_streamp strm;
 
@@ -163,7 +184,7 @@
     /* since an int is returned, make sure len fits in one, otherwise return
        with an error (this avoids the flaw in the interface) */
     if ((int)len < 0) {
-        gz_error(state, Z_BUF_ERROR, "requested length does not fit in int");
+        gz_error(state, Z_DATA_ERROR, "requested length does not fit in int");
         return 0;
     }
 
@@ -186,16 +207,19 @@
     if (len < state->size) {
         /* copy to input buffer, compress when full */
         do {
+            unsigned have, copy;
+
             if (strm->avail_in == 0)
                 strm->next_in = state->in;
-            n = state->size - strm->avail_in;
-            if (n > len)
-                n = len;
-            memcpy(strm->next_in + strm->avail_in, buf, n);
-            strm->avail_in += n;
-            state->pos += n;
-            buf = (char *)buf + n;
-            len -= n;
+            have = (unsigned)((strm->next_in + strm->avail_in) - state->in);
+            copy = state->size - have;
+            if (copy > len)
+                copy = len;
+            memcpy(state->in + have, buf, copy);
+            strm->avail_in += copy;
+            state->x.pos += copy;
+            buf = (const char *)buf + copy;
+            len -= copy;
             if (len && gz_comp(state, Z_NO_FLUSH) == -1)
                 return 0;
         } while (len);
@@ -207,8 +231,8 @@
 
         /* directly compress user buffer to file */
         strm->avail_in = len;
-        strm->next_in = (voidp)buf;
-        state->pos += len;
+        strm->next_in = (z_const Bytef *)buf;
+        state->x.pos += len;
         if (gz_comp(state, Z_NO_FLUSH) == -1)
             return 0;
     }
@@ -222,6 +246,7 @@
     gzFile file;
     int c;
 {
+    unsigned have;
     unsigned char buf[1];
     gz_statep state;
     z_streamp strm;
@@ -245,19 +270,23 @@
 
     /* try writing to input buffer for speed (state->size == 0 if buffer not
        initialized) */
-    if (strm->avail_in < state->size) {
+    if (state->size) {
         if (strm->avail_in == 0)
             strm->next_in = state->in;
-        strm->next_in[strm->avail_in++] = c;
-        state->pos++;
-        return c;
+        have = (unsigned)((strm->next_in + strm->avail_in) - state->in);
+        if (have < state->size) {
+            state->in[have] = c;
+            strm->avail_in++;
+            state->x.pos++;
+            return c & 0xff;
+        }
     }
 
     /* no room in buffer or not initialized, use gz_write() */
     buf[0] = c;
     if (gzwrite(file, buf, 1) != 1)
         return -1;
-    return c;
+    return c & 0xff;
 }
 
 /* -- see zlib.h -- */
@@ -274,87 +303,11 @@
     return ret == 0 && len != 0 ? -1 : ret;
 }
 
-#ifdef STDC
+#if defined(STDC) || defined(Z_HAVE_STDARG_H)
 #include <stdarg.h>
 
 /* -- see zlib.h -- */
-int ZEXPORTVA gzprintf (gzFile file, const char *format, ...)
-{
-    int size, len;
-    gz_statep state;
-    z_streamp strm;
-    va_list va;
-
-    /* get internal structure */
-    if (file == NULL)
-        return -1;
-    state = (gz_statep)file;
-    strm = &(state->strm);
-
-    /* check that we're writing and that there's no error */
-    if (state->mode != GZ_WRITE || state->err != Z_OK)
-        return 0;
-
-    /* make sure we have some buffer space */
-    if (state->size == 0 && gz_init(state) == -1)
-        return 0;
-
-    /* check for seek request */
-    if (state->seek) {
-        state->seek = 0;
-        if (gz_zero(state, state->skip) == -1)
-            return 0;
-    }
-
-    /* consume whatever's left in the input buffer */
-    if (strm->avail_in && gz_comp(state, Z_NO_FLUSH) == -1)
-        return 0;
-
-    /* do the printf() into the input buffer, put length in len */
-    size = (int)(state->size);
-    state->in[size - 1] = 0;
-    va_start(va, format);
-#ifdef NO_vsnprintf
-#  ifdef HAS_vsprintf_void
-    (void)vsprintf(state->in, format, va);
-    va_end(va);
-    for (len = 0; len < size; len++)
-        if (state->in[len] == 0) break;
-#  else
-    len = vsprintf(state->in, format, va);
-    va_end(va);
-#  endif
-#else
-#  ifdef HAS_vsnprintf_void
-    (void)vsnprintf(state->in, size, format, va);
-    va_end(va);
-    len = strlen(state->in);
-#  else
-    len = vsnprintf((char *)(state->in), size, format, va);
-    va_end(va);
-#  endif
-#endif
-
-    /* check that printf() results fit in buffer */
-    if (len <= 0 || len >= (int)size || state->in[size - 1] != 0)
-        return 0;
-
-    /* update buffer and position, defer compression until needed */
-    strm->avail_in = (unsigned)len;
-    strm->next_in = state->in;
-    state->pos += len;
-    return len;
-}
-
-#else /* !STDC */
-
-/* -- see zlib.h -- */
-int ZEXPORTVA gzprintf (file, format, a1, a2, a3, a4, a5, a6, a7, a8, a9, a10,
-                       a11, a12, a13, a14, a15, a16, a17, a18, a19, a20)
-    gzFile file;
-    const char *format;
-    int a1, a2, a3, a4, a5, a6, a7, a8, a9, a10,
-        a11, a12, a13, a14, a15, a16, a17, a18, a19, a20;
+int ZEXPORTVA gzvprintf(gzFile file, const char *format, va_list va)
 {
     int size, len;
     gz_statep state;
@@ -388,24 +341,20 @@
     /* do the printf() into the input buffer, put length in len */
     size = (int)(state->size);
     state->in[size - 1] = 0;
-#ifdef NO_snprintf
-#  ifdef HAS_sprintf_void
-    sprintf(state->in, format, a1, a2, a3, a4, a5, a6, a7, a8,
-            a9, a10, a11, a12, a13, a14, a15, a16, a17, a18, a19, a20);
+#ifdef NO_vsnprintf
+#  ifdef HAS_vsprintf_void
+    (void)vsprintf((char *)(state->in), format, va);
     for (len = 0; len < size; len++)
         if (state->in[len] == 0) break;
 #  else
-    len = sprintf(state->in, format, a1, a2, a3, a4, a5, a6, a7, a8,
-                a9, a10, a11, a12, a13, a14, a15, a16, a17, a18, a19, a20);
+    len = vsprintf((char *)(state->in), format, va);
 #  endif
 #else
-#  ifdef HAS_snprintf_void
-    snprintf(state->in, size, format, a1, a2, a3, a4, a5, a6, a7, a8,
-             a9, a10, a11, a12, a13, a14, a15, a16, a17, a18, a19, a20);
-    len = strlen(state->in);
+#  ifdef HAS_vsnprintf_void
+    (void)vsnprintf((char *)(state->in), size, format, va);
+    len = strlen((char *)(state->in));
 #  else
-    len = snprintf(state->in, size, format, a1, a2, a3, a4, a5, a6, a7, a8,
-                 a9, a10, a11, a12, a13, a14, a15, a16, a17, a18, a19, a20);
+    len = vsnprintf((char *)(state->in), size, format, va);
 #  endif
 #endif
 
@@ -416,7 +365,97 @@
     /* update buffer and position, defer compression until needed */
     strm->avail_in = (unsigned)len;
     strm->next_in = state->in;
-    state->pos += len;
+    state->x.pos += len;
+    return len;
+}
+
+int ZEXPORTVA gzprintf(gzFile file, const char *format, ...)
+{
+    va_list va;
+    int ret;
+
+    va_start(va, format);
+    ret = gzvprintf(file, format, va);
+    va_end(va);
+    return ret;
+}
+
+#else /* !STDC && !Z_HAVE_STDARG_H */
+
+/* -- see zlib.h -- */
+int ZEXPORTVA gzprintf (file, format, a1, a2, a3, a4, a5, a6, a7, a8, a9, a10,
+                       a11, a12, a13, a14, a15, a16, a17, a18, a19, a20)
+    gzFile file;
+    const char *format;
+    int a1, a2, a3, a4, a5, a6, a7, a8, a9, a10,
+        a11, a12, a13, a14, a15, a16, a17, a18, a19, a20;
+{
+    int size, len;
+    gz_statep state;
+    z_streamp strm;
+
+    /* get internal structure */
+    if (file == NULL)
+        return -1;
+    state = (gz_statep)file;
+    strm = &(state->strm);
+
+    /* check that can really pass pointer in ints */
+    if (sizeof(int) != sizeof(void *))
+        return 0;
+
+    /* check that we're writing and that there's no error */
+    if (state->mode != GZ_WRITE || state->err != Z_OK)
+        return 0;
+
+    /* make sure we have some buffer space */
+    if (state->size == 0 && gz_init(state) == -1)
+        return 0;
+
+    /* check for seek request */
+    if (state->seek) {
+        state->seek = 0;
+        if (gz_zero(state, state->skip) == -1)
+            return 0;
+    }
+
+    /* consume whatever's left in the input buffer */
+    if (strm->avail_in && gz_comp(state, Z_NO_FLUSH) == -1)
+        return 0;
+
+    /* do the printf() into the input buffer, put length in len */
+    size = (int)(state->size);
+    state->in[size - 1] = 0;
+#ifdef NO_snprintf
+#  ifdef HAS_sprintf_void
+    sprintf((char *)(state->in), format, a1, a2, a3, a4, a5, a6, a7, a8,
+            a9, a10, a11, a12, a13, a14, a15, a16, a17, a18, a19, a20);
+    for (len = 0; len < size; len++)
+        if (state->in[len] == 0) break;
+#  else
+    len = sprintf((char *)(state->in), format, a1, a2, a3, a4, a5, a6, a7, a8,
+                  a9, a10, a11, a12, a13, a14, a15, a16, a17, a18, a19, a20);
+#  endif
+#else
+#  ifdef HAS_snprintf_void
+    snprintf((char *)(state->in), size, format, a1, a2, a3, a4, a5, a6, a7, a8,
+             a9, a10, a11, a12, a13, a14, a15, a16, a17, a18, a19, a20);
+    len = strlen((char *)(state->in));
+#  else
+    len = snprintf((char *)(state->in), size, format, a1, a2, a3, a4, a5, a6,
+                   a7, a8, a9, a10, a11, a12, a13, a14, a15, a16, a17, a18,
+                   a19, a20);
+#  endif
+#endif
+
+    /* check that printf() results fit in buffer */
+    if (len <= 0 || len >= (int)size || state->in[size - 1] != 0)
+        return 0;
+
+    /* update buffer and position, defer compression until needed */
+    strm->avail_in = (unsigned)len;
+    strm->next_in = state->in;
+    state->x.pos += len;
     return len;
 }
 
@@ -500,7 +539,7 @@
 int ZEXPORT gzclose_w(file)
     gzFile file;
 {
-    int ret = 0;
+    int ret = Z_OK;
     gz_statep state;
 
     /* get internal structure */
@@ -515,17 +554,24 @@
     /* check for seek request */
     if (state->seek) {
         state->seek = 0;
-        ret += gz_zero(state, state->skip);
+        if (gz_zero(state, state->skip) == -1)
+            ret = state->err;
     }
 
     /* flush, free memory, and close file */
-    ret += gz_comp(state, Z_FINISH);
-    (void)deflateEnd(&(state->strm));
-    free(state->out);
-    free(state->in);
+    if (gz_comp(state, Z_FINISH) == -1)
+        ret = state->err;
+    if (state->size) {
+        if (!state->direct) {
+            (void)deflateEnd(&(state->strm));
+            free(state->out);
+        }
+        free(state->in);
+    }
     gz_error(state, Z_OK, NULL);
     free(state->path);
-    ret += close(state->fd);
+    if (close(state->fd) == -1)
+        ret = Z_ERRNO;
     free(state);
-    return ret ? Z_ERRNO : Z_OK;
+    return ret;
 }
diff --git a/Modules/zlib/infback.c b/Modules/zlib/infback.c
--- a/Modules/zlib/infback.c
+++ b/Modules/zlib/infback.c
@@ -1,5 +1,5 @@
 /* infback.c -- inflate using a call-back interface
- * Copyright (C) 1995-2009 Mark Adler
+ * Copyright (C) 1995-2011 Mark Adler
  * For conditions of distribution and use, see copyright notice in zlib.h
  */
 
@@ -42,10 +42,19 @@
         return Z_STREAM_ERROR;
     strm->msg = Z_NULL;                 /* in case we return an error */
     if (strm->zalloc == (alloc_func)0) {
+#ifdef Z_SOLO
+        return Z_STREAM_ERROR;
+#else
         strm->zalloc = zcalloc;
         strm->opaque = (voidpf)0;
+#endif
     }
-    if (strm->zfree == (free_func)0) strm->zfree = zcfree;
+    if (strm->zfree == (free_func)0)
+#ifdef Z_SOLO
+        return Z_STREAM_ERROR;
+#else
+    strm->zfree = zcfree;
+#endif
     state = (struct inflate_state FAR *)ZALLOC(strm, 1,
                                                sizeof(struct inflate_state));
     if (state == Z_NULL) return Z_MEM_ERROR;
@@ -246,7 +255,7 @@
 void FAR *out_desc;
 {
     struct inflate_state FAR *state;
-    unsigned char FAR *next;    /* next input */
+    z_const unsigned char FAR *next;    /* next input */
     unsigned char FAR *put;     /* next output */
     unsigned have, left;        /* available input and output */
     unsigned long hold;         /* bit buffer */
@@ -394,7 +403,6 @@
                     PULLBYTE();
                 }
                 if (here.val < 16) {
-                    NEEDBITS(here.bits);
                     DROPBITS(here.bits);
                     state->lens[state->have++] = here.val;
                 }
diff --git a/Modules/zlib/inffast.c b/Modules/zlib/inffast.c
--- a/Modules/zlib/inffast.c
+++ b/Modules/zlib/inffast.c
@@ -1,5 +1,5 @@
 /* inffast.c -- fast decoding
- * Copyright (C) 1995-2008, 2010 Mark Adler
+ * Copyright (C) 1995-2008, 2010, 2013 Mark Adler
  * For conditions of distribution and use, see copyright notice in zlib.h
  */
 
@@ -69,8 +69,8 @@
 unsigned start;         /* inflate()'s starting value for strm->avail_out */
 {
     struct inflate_state FAR *state;
-    unsigned char FAR *in;      /* local strm->next_in */
-    unsigned char FAR *last;    /* while in < last, enough input available */
+    z_const unsigned char FAR *in;      /* local strm->next_in */
+    z_const unsigned char FAR *last;    /* have enough input while in < last */
     unsigned char FAR *out;     /* local strm->next_out */
     unsigned char FAR *beg;     /* inflate()'s initial strm->next_out */
     unsigned char FAR *end;     /* while out < end, enough space available */
diff --git a/Modules/zlib/inffixed.h b/Modules/zlib/inffixed.h
--- a/Modules/zlib/inffixed.h
+++ b/Modules/zlib/inffixed.h
@@ -2,9 +2,9 @@
      * Generated automatically by makefixed().
      */
 
-    /* WARNING: this file should *not* be used by applications. It
-       is part of the implementation of the compression library and
-       is subject to change. Applications should only use zlib.h.
+    /* WARNING: this file should *not* be used by applications.
+       It is part of the implementation of this library and is
+       subject to change. Applications should only use zlib.h.
      */
 
     static const code lenfix[512] = {
diff --git a/Modules/zlib/inflate.c b/Modules/zlib/inflate.c
--- a/Modules/zlib/inflate.c
+++ b/Modules/zlib/inflate.c
@@ -1,5 +1,5 @@
 /* inflate.c -- zlib decompression
- * Copyright (C) 1995-2010 Mark Adler
+ * Copyright (C) 1995-2012 Mark Adler
  * For conditions of distribution and use, see copyright notice in zlib.h
  */
 
@@ -93,13 +93,39 @@
 
 /* function prototypes */
 local void fixedtables OF((struct inflate_state FAR *state));
-local int updatewindow OF((z_streamp strm, unsigned out));
+local int updatewindow OF((z_streamp strm, const unsigned char FAR *end,
+                           unsigned copy));
 #ifdef BUILDFIXED
    void makefixed OF((void));
 #endif
-local unsigned syncsearch OF((unsigned FAR *have, unsigned char FAR *buf,
+local unsigned syncsearch OF((unsigned FAR *have, const unsigned char FAR *buf,
                               unsigned len));
 
+int ZEXPORT inflateResetKeep(strm)
+z_streamp strm;
+{
+    struct inflate_state FAR *state;
+
+    if (strm == Z_NULL || strm->state == Z_NULL) return Z_STREAM_ERROR;
+    state = (struct inflate_state FAR *)strm->state;
+    strm->total_in = strm->total_out = state->total = 0;
+    strm->msg = Z_NULL;
+    if (state->wrap)        /* to support ill-conceived Java test suite */
+        strm->adler = state->wrap & 1;
+    state->mode = HEAD;
+    state->last = 0;
+    state->havedict = 0;
+    state->dmax = 32768U;
+    state->head = Z_NULL;
+    state->hold = 0;
+    state->bits = 0;
+    state->lencode = state->distcode = state->next = state->codes;
+    state->sane = 1;
+    state->back = -1;
+    Tracev((stderr, "inflate: reset\n"));
+    return Z_OK;
+}
+
 int ZEXPORT inflateReset(strm)
 z_streamp strm;
 {
@@ -107,24 +133,10 @@
 
     if (strm == Z_NULL || strm->state == Z_NULL) return Z_STREAM_ERROR;
     state = (struct inflate_state FAR *)strm->state;
-    strm->total_in = strm->total_out = state->total = 0;
-    strm->msg = Z_NULL;
-    strm->adler = 1;        /* to support ill-conceived Java test suite */
-    state->mode = HEAD;
-    state->last = 0;
-    state->havedict = 0;
-    state->dmax = 32768U;
-    state->head = Z_NULL;
     state->wsize = 0;
     state->whave = 0;
     state->wnext = 0;
-    state->hold = 0;
-    state->bits = 0;
-    state->lencode = state->distcode = state->next = state->codes;
-    state->sane = 1;
-    state->back = -1;
-    Tracev((stderr, "inflate: reset\n"));
-    return Z_OK;
+    return inflateResetKeep(strm);
 }
 
 int ZEXPORT inflateReset2(strm, windowBits)
@@ -180,10 +192,19 @@
     if (strm == Z_NULL) return Z_STREAM_ERROR;
     strm->msg = Z_NULL;                 /* in case we return an error */
     if (strm->zalloc == (alloc_func)0) {
+#ifdef Z_SOLO
+        return Z_STREAM_ERROR;
+#else
         strm->zalloc = zcalloc;
         strm->opaque = (voidpf)0;
+#endif
     }
-    if (strm->zfree == (free_func)0) strm->zfree = zcfree;
+    if (strm->zfree == (free_func)0)
+#ifdef Z_SOLO
+        return Z_STREAM_ERROR;
+#else
+        strm->zfree = zcfree;
+#endif
     state = (struct inflate_state FAR *)
             ZALLOC(strm, 1, sizeof(struct inflate_state));
     if (state == Z_NULL) return Z_MEM_ERROR;
@@ -321,8 +342,8 @@
     low = 0;
     for (;;) {
         if ((low % 7) == 0) printf("\n        ");
-        printf("{%u,%u,%d}", state.lencode[low].op, state.lencode[low].bits,
-               state.lencode[low].val);
+        printf("{%u,%u,%d}", (low & 127) == 99 ? 64 : state.lencode[low].op,
+               state.lencode[low].bits, state.lencode[low].val);
         if (++low == size) break;
         putchar(',');
     }
@@ -355,12 +376,13 @@
    output will fall in the output data, making match copies simpler and faster.
    The advantage may be dependent on the size of the processor's data caches.
  */
-local int updatewindow(strm, out)
+local int updatewindow(strm, end, copy)
 z_streamp strm;
-unsigned out;
+const Bytef *end;
+unsigned copy;
 {
     struct inflate_state FAR *state;
-    unsigned copy, dist;
+    unsigned dist;
 
     state = (struct inflate_state FAR *)strm->state;
 
@@ -380,19 +402,18 @@
     }
 
     /* copy state->wsize or less output bytes into the circular window */
-    copy = out - strm->avail_out;
     if (copy >= state->wsize) {
-        zmemcpy(state->window, strm->next_out - state->wsize, state->wsize);
+        zmemcpy(state->window, end - state->wsize, state->wsize);
         state->wnext = 0;
         state->whave = state->wsize;
     }
     else {
         dist = state->wsize - state->wnext;
         if (dist > copy) dist = copy;
-        zmemcpy(state->window + state->wnext, strm->next_out - copy, dist);
+        zmemcpy(state->window + state->wnext, end - copy, dist);
         copy -= dist;
         if (copy) {
-            zmemcpy(state->window, strm->next_out - copy, copy);
+            zmemcpy(state->window, end - copy, copy);
             state->wnext = copy;
             state->whave = state->wsize;
         }
@@ -499,11 +520,6 @@
         bits -= bits & 7; \
     } while (0)
 
-/* Reverse the bytes in a 32-bit value */
-#define REVERSE(q) \
-    ((((q) >> 24) & 0xff) + (((q) >> 8) & 0xff00) + \
-     (((q) & 0xff00) << 8) + (((q) & 0xff) << 24))
-
 /*
    inflate() uses a state machine to process as much input data and generate as
    much output data as possible before returning.  The state machine is
@@ -591,7 +607,7 @@
 int flush;
 {
     struct inflate_state FAR *state;
-    unsigned char FAR *next;    /* next input */
+    z_const unsigned char FAR *next;    /* next input */
     unsigned char FAR *put;     /* next output */
     unsigned have, left;        /* available input and output */
     unsigned long hold;         /* bit buffer */
@@ -797,7 +813,7 @@
 #endif
         case DICTID:
             NEEDBITS(32);
-            strm->adler = state->check = REVERSE(hold);
+            strm->adler = state->check = ZSWAP32(hold);
             INITBITS();
             state->mode = DICT;
         case DICT:
@@ -905,7 +921,7 @@
             while (state->have < 19)
                 state->lens[order[state->have++]] = 0;
             state->next = state->codes;
-            state->lencode = (code const FAR *)(state->next);
+            state->lencode = (const code FAR *)(state->next);
             state->lenbits = 7;
             ret = inflate_table(CODES, state->lens, 19, &(state->next),
                                 &(state->lenbits), state->work);
@@ -925,7 +941,6 @@
                     PULLBYTE();
                 }
                 if (here.val < 16) {
-                    NEEDBITS(here.bits);
                     DROPBITS(here.bits);
                     state->lens[state->have++] = here.val;
                 }
@@ -980,7 +995,7 @@
                values here (9 and 6) without reading the comments in inftrees.h
                concerning the ENOUGH constants, which depend on those values */
             state->next = state->codes;
-            state->lencode = (code const FAR *)(state->next);
+            state->lencode = (const code FAR *)(state->next);
             state->lenbits = 9;
             ret = inflate_table(LENS, state->lens, state->nlen, &(state->next),
                                 &(state->lenbits), state->work);
@@ -989,7 +1004,7 @@
                 state->mode = BAD;
                 break;
             }
-            state->distcode = (code const FAR *)(state->next);
+            state->distcode = (const code FAR *)(state->next);
             state->distbits = 6;
             ret = inflate_table(DISTS, state->lens + state->nlen, state->ndist,
                             &(state->next), &(state->distbits), state->work);
@@ -1170,7 +1185,7 @@
 #ifdef GUNZIP
                      state->flags ? hold :
 #endif
-                     REVERSE(hold)) != state->check) {
+                     ZSWAP32(hold)) != state->check) {
                     strm->msg = (char *)"incorrect data check";
                     state->mode = BAD;
                     break;
@@ -1214,8 +1229,9 @@
      */
   inf_leave:
     RESTORE();
-    if (state->wsize || (state->mode < CHECK && out != strm->avail_out))
-        if (updatewindow(strm, out)) {
+    if (state->wsize || (out != strm->avail_out && state->mode < BAD &&
+            (state->mode < CHECK || flush != Z_FINISH)))
+        if (updatewindow(strm, strm->next_out, out - strm->avail_out)) {
             state->mode = MEM;
             return Z_MEM_ERROR;
         }
@@ -1249,13 +1265,37 @@
     return Z_OK;
 }
 
+int ZEXPORT inflateGetDictionary(strm, dictionary, dictLength)
+z_streamp strm;
+Bytef *dictionary;
+uInt *dictLength;
+{
+    struct inflate_state FAR *state;
+
+    /* check state */
+    if (strm == Z_NULL || strm->state == Z_NULL) return Z_STREAM_ERROR;
+    state = (struct inflate_state FAR *)strm->state;
+
+    /* copy dictionary */
+    if (state->whave && dictionary != Z_NULL) {
+        zmemcpy(dictionary, state->window + state->wnext,
+                state->whave - state->wnext);
+        zmemcpy(dictionary + state->whave - state->wnext,
+                state->window, state->wnext);
+    }
+    if (dictLength != Z_NULL)
+        *dictLength = state->whave;
+    return Z_OK;
+}
+
 int ZEXPORT inflateSetDictionary(strm, dictionary, dictLength)
 z_streamp strm;
 const Bytef *dictionary;
 uInt dictLength;
 {
     struct inflate_state FAR *state;
-    unsigned long id;
+    unsigned long dictid;
+    int ret;
 
     /* check state */
     if (strm == Z_NULL || strm->state == Z_NULL) return Z_STREAM_ERROR;
@@ -1263,29 +1303,21 @@
     if (state->wrap != 0 && state->mode != DICT)
         return Z_STREAM_ERROR;
 
-    /* check for correct dictionary id */
+    /* check for correct dictionary identifier */
     if (state->mode == DICT) {
-        id = adler32(0L, Z_NULL, 0);
-        id = adler32(id, dictionary, dictLength);
-        if (id != state->check)
+        dictid = adler32(0L, Z_NULL, 0);
+        dictid = adler32(dictid, dictionary, dictLength);
+        if (dictid != state->check)
             return Z_DATA_ERROR;
     }
 
-    /* copy dictionary to window */
-    if (updatewindow(strm, strm->avail_out)) {
+    /* copy dictionary to window using updatewindow(), which will amend the
+       existing dictionary if appropriate */
+    ret = updatewindow(strm, dictionary + dictLength, dictLength);
+    if (ret) {
         state->mode = MEM;
         return Z_MEM_ERROR;
     }
-    if (dictLength > state->wsize) {
-        zmemcpy(state->window, dictionary + dictLength - state->wsize,
-                state->wsize);
-        state->whave = state->wsize;
-    }
-    else {
-        zmemcpy(state->window + state->wsize - dictLength, dictionary,
-                dictLength);
-        state->whave = dictLength;
-    }
     state->havedict = 1;
     Tracev((stderr, "inflate:   dictionary set\n"));
     return Z_OK;
@@ -1321,7 +1353,7 @@
  */
 local unsigned syncsearch(have, buf, len)
 unsigned FAR *have;
-unsigned char FAR *buf;
+const unsigned char FAR *buf;
 unsigned len;
 {
     unsigned got;
@@ -1433,8 +1465,8 @@
     }
 
     /* copy state */
-    zmemcpy(dest, source, sizeof(z_stream));
-    zmemcpy(copy, state, sizeof(struct inflate_state));
+    zmemcpy((voidpf)dest, (voidpf)source, sizeof(z_stream));
+    zmemcpy((voidpf)copy, (voidpf)state, sizeof(struct inflate_state));
     if (state->lencode >= state->codes &&
         state->lencode <= state->codes + ENOUGH - 1) {
         copy->lencode = copy->codes + (state->lencode - state->codes);
diff --git a/Modules/zlib/inftrees.c b/Modules/zlib/inftrees.c
--- a/Modules/zlib/inftrees.c
+++ b/Modules/zlib/inftrees.c
@@ -1,5 +1,5 @@
 /* inftrees.c -- generate Huffman trees for efficient decoding
- * Copyright (C) 1995-2010 Mark Adler
+ * Copyright (C) 1995-2013 Mark Adler
  * For conditions of distribution and use, see copyright notice in zlib.h
  */
 
@@ -9,7 +9,7 @@
 #define MAXBITS 15
 
 const char inflate_copyright[] =
-   " inflate 1.2.5 Copyright 1995-2010 Mark Adler ";
+   " inflate 1.2.8 Copyright 1995-2013 Mark Adler ";
 /*
   If you use the zlib library in a product, an acknowledgment is welcome
   in the documentation of your product. If for some reason you cannot
@@ -62,7 +62,7 @@
         35, 43, 51, 59, 67, 83, 99, 115, 131, 163, 195, 227, 258, 0, 0};
     static const unsigned short lext[31] = { /* Length codes 257..285 extra */
         16, 16, 16, 16, 16, 16, 16, 16, 17, 17, 17, 17, 18, 18, 18, 18,
-        19, 19, 19, 19, 20, 20, 20, 20, 21, 21, 21, 21, 16, 73, 195};
+        19, 19, 19, 19, 20, 20, 20, 20, 21, 21, 21, 21, 16, 72, 78};
     static const unsigned short dbase[32] = { /* Distance codes 0..29 base */
         1, 2, 3, 4, 5, 7, 9, 13, 17, 25, 33, 49, 65, 97, 129, 193,
         257, 385, 513, 769, 1025, 1537, 2049, 3073, 4097, 6145,
@@ -208,8 +208,8 @@
     mask = used - 1;            /* mask for comparing low */
 
     /* check available table space */
-    if ((type == LENS && used >= ENOUGH_LENS) ||
-        (type == DISTS && used >= ENOUGH_DISTS))
+    if ((type == LENS && used > ENOUGH_LENS) ||
+        (type == DISTS && used > ENOUGH_DISTS))
         return 1;
 
     /* process all codes and make table entries */
@@ -277,8 +277,8 @@
 
             /* check for enough space */
             used += 1U << curr;
-            if ((type == LENS && used >= ENOUGH_LENS) ||
-                (type == DISTS && used >= ENOUGH_DISTS))
+            if ((type == LENS && used > ENOUGH_LENS) ||
+                (type == DISTS && used > ENOUGH_DISTS))
                 return 1;
 
             /* point entry in root table to sub-table */
@@ -289,38 +289,14 @@
         }
     }
 
-    /*
-       Fill in rest of table for incomplete codes.  This loop is similar to the
-       loop above in incrementing huff for table indices.  It is assumed that
-       len is equal to curr + drop, so there is no loop needed to increment
-       through high index bits.  When the current sub-table is filled, the loop
-       drops back to the root table to fill in any remaining entries there.
-     */
-    here.op = (unsigned char)64;                /* invalid code marker */
-    here.bits = (unsigned char)(len - drop);
-    here.val = (unsigned short)0;
-    while (huff != 0) {
-        /* when done with sub-table, drop back to root table */
-        if (drop != 0 && (huff & mask) != low) {
-            drop = 0;
-            len = root;
-            next = *table;
-            here.bits = (unsigned char)len;
-        }
-
-        /* put invalid code marker in table */
-        next[huff >> drop] = here;
-
-        /* backwards increment the len-bit code huff */
-        incr = 1U << (len - 1);
-        while (huff & incr)
-            incr >>= 1;
-        if (incr != 0) {
-            huff &= incr - 1;
-            huff += incr;
-        }
-        else
-            huff = 0;
+    /* fill in remaining table entry if code is incomplete (guaranteed to have
+       at most one remaining entry, since if the code is incomplete, the
+       maximum code length that was allowed to get this far is one bit) */
+    if (huff != 0) {
+        here.op = (unsigned char)64;            /* invalid code marker */
+        here.bits = (unsigned char)(len - drop);
+        here.val = (unsigned short)0;
+        next[huff] = here;
     }
 
     /* set return parameters */
diff --git a/Modules/zlib/inftrees.h b/Modules/zlib/inftrees.h
--- a/Modules/zlib/inftrees.h
+++ b/Modules/zlib/inftrees.h
@@ -41,7 +41,7 @@
    examples/enough.c found in the zlib distribtution.  The arguments to that
    program are the number of symbols, the initial root table size, and the
    maximum bit length of a code.  "enough 286 9 15" for literal/length codes
-   returns 852, and "enough 30 6 15" for distance codes returns 592.
+   returns returns 852, and "enough 30 6 15" for distance codes returns 592.
    The initial root table size (9 or 6) is found in the fifth argument of the
    inflate_table() calls in inflate.c and infback.c.  If the root table size is
    changed, then these maximum sizes would be need to be recalculated and
diff --git a/Modules/zlib/make_vms.com b/Modules/zlib/make_vms.com
--- a/Modules/zlib/make_vms.com
+++ b/Modules/zlib/make_vms.com
@@ -3,7 +3,7 @@
 $!
 $! In case of problems with the install you might contact me at
 $! zinser at zinser.no-ip.info(preferred) or
-$! zinser at sysdev.deutsche-boerse.com (work)
+$! martin.zinser at eurexchange.com (work)
 $!
 $! Make procedure history for Zlib
 $!
@@ -14,9 +14,16 @@
 $! 0.03 20091224 Add support for large file check
 $! 0.04 20100110 Add new gzclose, gzlib, gzread, gzwrite
 $! 0.05 20100221 Exchange zlibdefs.h by zconf.h.in
+$! 0.06 20120111 Fix missing amiss_err, update zconf_h.in, fix new exmples
+$!               subdir path, update module search in makefile.in
+$! 0.07 20120115 Triggered by work done by Alexey Chupahin completly redesigned
+$!               shared image creation
+$! 0.08 20120219 Make it work on VAX again, pre-load missing symbols to shared
+$!               image
+$! 0.09 20120305 SMS.  P1 sets builder ("MMK", "MMS", " " (built-in)).
+$!               "" -> automatic, preference: MMK, MMS, built-in.
 $!
 $ on error then goto err_exit
-$ set proc/parse=ext
 $!
 $ true  = 1
 $ false = 0
@@ -32,31 +39,43 @@
 $!
 $! Setup variables holding "config" information
 $!
-$ Make    = ""
+$ Make    = "''p1'"
 $ name     = "Zlib"
 $ version  = "?.?.?"
 $ v_string = "ZLIB_VERSION"
 $ v_file   = "zlib.h"
-$ ccopt   = ""
+$ ccopt   = "/include = []"
 $ lopts   = ""
 $ dnsrl   = ""
-$ aconf_in_file = "zconf.h.in#zconf.h_in"
+$ aconf_in_file = "zconf.h.in#zconf.h_in#zconf_h.in"
 $ conf_check_string = ""
 $ linkonly = false
 $ optfile  = name + ".opt"
+$ mapfile  = name + ".map"
 $ libdefs  = ""
+$ vax      = f$getsyi("HW_MODEL").lt.1024
 $ axp      = f$getsyi("HW_MODEL").ge.1024 .and. f$getsyi("HW_MODEL").lt.4096
+$ ia64     = f$getsyi("HW_MODEL").ge.4096
 $!
-$ whoami = f$parse(f$enviornment("Procedure"),,,,"NO_CONCEAL")
+$! 2012-03-05 SMS.
+$! Why is this needed?  And if it is needed, why not simply ".not. vax"?
+$!
+$!!! if axp .or. ia64 then  set proc/parse=extended
+$!
+$ whoami = f$parse(f$environment("Procedure"),,,,"NO_CONCEAL")
 $ mydef  = F$parse(whoami,,,"DEVICE")
 $ mydir  = f$parse(whoami,,,"DIRECTORY") - "]["
 $ myproc = f$parse(whoami,,,"Name") + f$parse(whoami,,,"type")
 $!
 $! Check for MMK/MMS
 $!
-$ If F$Search ("Sys$System:MMS.EXE") .nes. "" Then Make = "MMS"
-$ If F$Type (MMK) .eqs. "STRING" Then Make = "MMK"
-$!
+$ if (Make .eqs. "")
+$ then
+$   If F$Search ("Sys$System:MMS.EXE") .nes. "" Then Make = "MMS"
+$   If F$Type (MMK) .eqs. "STRING" Then Make = "MMK"
+$ else
+$   Make = f$edit( Make, "trim")
+$ endif
 $!
 $ gosub find_version
 $!
@@ -69,6 +88,7 @@
 $!
 $ gosub check_compiler
 $ close topt
+$ close optf
 $!
 $ if its_decc
 $ then
@@ -83,6 +103,15 @@
 $       define sys decc$library_include:
 $     endif
 $   endif
+$!
+$! 2012-03-05 SMS.
+$! Why /NAMES = AS_IS?  Why not simply ".not. vax"?  And why not on VAX?
+$!
+$   if axp .or. ia64
+$   then
+$       ccopt = ccopt + "/name=as_is/opt=(inline=speed)"
+$       s_case = true
+$   endif
 $ endif
 $ if its_vaxc .or. its_gnuc
 $ then
@@ -122,15 +151,20 @@
 $ endif
 $ goto aconf_loop
 $ACONF_EXIT:
+$ write aconf ""
+$ write aconf "/* VMS specifics added by make_vms.com: */"
 $ write aconf "#define VMS 1"
 $ write aconf "#include <unistd.h>"
 $ write aconf "#include <unixio.h>"
 $ write aconf "#ifdef _LARGEFILE"
-$ write aconf "#define off64_t __off64_t"
-$ write aconf "#define fopen64 fopen"
-$ write aconf "#define fseeko64 fseeko"
-$ write aconf "#define lseek64 lseek"
-$ write aconf "#define ftello64 ftell"
+$ write aconf "# define off64_t __off64_t"
+$ write aconf "# define fopen64 fopen"
+$ write aconf "# define fseeko64 fseeko"
+$ write aconf "# define lseek64 lseek"
+$ write aconf "# define ftello64 ftell"
+$ write aconf "#endif"
+$ write aconf "#if !defined( __VAX) && (__CRTL_VER >= 70312000)"
+$ write aconf "# define HAVE_VSNPRINTF"
 $ write aconf "#endif"
 $ close aconf_in
 $ close aconf
@@ -139,8 +173,9 @@
 $!
 $ write sys$output "Compiling Zlib sources ..."
 $ if make.eqs.""
-$  then
-$   dele example.obj;*,minigzip.obj;*
+$ then
+$   if (f$search( "example.obj;*") .nes. "") then delete example.obj;*
+$   if (f$search( "minigzip.obj;*") .nes. "") then delete minigzip.obj;*
 $   CALL MAKE adler32.OBJ "CC ''CCOPT' adler32" -
                 adler32.c zlib.h zconf.h
 $   CALL MAKE compress.OBJ "CC ''CCOPT' compress" -
@@ -174,41 +209,34 @@
 $   write sys$output "Building Zlib ..."
 $   CALL MAKE libz.OLB "lib/crea libz.olb *.obj" *.OBJ
 $   write sys$output "Building example..."
-$   CALL MAKE example.OBJ "CC ''CCOPT' example" -
-                example.c zlib.h zconf.h
+$   CALL MAKE example.OBJ "CC ''CCOPT' [.test]example" -
+                [.test]example.c zlib.h zconf.h
 $   call make example.exe "LINK example,libz.olb/lib" example.obj libz.olb
-$   if f$search("x11vms:xvmsutils.olb") .nes. ""
-$   then
-$     write sys$output "Building minigzip..."
-$     CALL MAKE minigzip.OBJ "CC ''CCOPT' minigzip" -
-                minigzip.c zlib.h zconf.h
-$     call make minigzip.exe -
-                "LINK minigzip,libz.olb/lib,x11vms:xvmsutils.olb/lib" -
-                minigzip.obj libz.olb
-$   endif
-$  else
+$   write sys$output "Building minigzip..."
+$   CALL MAKE minigzip.OBJ "CC ''CCOPT' [.test]minigzip" -
+              [.test]minigzip.c zlib.h zconf.h
+$   call make minigzip.exe -
+              "LINK minigzip,libz.olb/lib" -
+              minigzip.obj libz.olb
+$ else
 $   gosub crea_mms
 $   write sys$output "Make ''name' ''version' with ''Make' "
 $   'make'
-$  endif
+$ endif
 $!
-$! Alpha gets a shareable image
+$! Create shareable image
 $!
-$ If axp
-$ Then
-$   gosub crea_olist
-$   write sys$output "Creating libzshr.exe"
-$   call anal_obj_axp modules.opt _link.opt
-$   if s_case
-$   then
-$      open/append optf modules.opt
-$      write optf "case_sensitive=YES"
-$      close optf
-$   endif
-$   LINK_'lopts'/SHARE=libzshr.exe modules.opt/opt,_link.opt/opt
-$ endif
+$ gosub crea_olist
+$ write sys$output "Creating libzshr.exe"
+$ call map_2_shopt 'mapfile' 'optfile'
+$ LINK_'lopts'/SHARE=libzshr.exe modules.opt/opt,'optfile'/opt
 $ write sys$output "Zlib build completed"
+$ delete/nolog tmp.opt;*
 $ exit
+$AMISS_ERR:
+$ write sys$output "No source for config.hin found."
+$ write sys$output "Tried any of ''aconf_in_file'"
+$ goto err_exit
 $CC_ERR:
 $ write sys$output "C compiler required to build ''name'"
 $ goto err_exit
@@ -216,7 +244,6 @@
 $ set message/facil/ident/sever/text
 $ close/nolog optf
 $ close/nolog topt
-$ close/nolog conf_hin
 $ close/nolog aconf_in
 $ close/nolog aconf
 $ close/nolog out
@@ -397,7 +424,7 @@
 $ deck
 # descrip.mms: MMS description file for building zlib on VMS
 # written by Martin P.J. Zinser
-# <zinser at zinser.no-ip.info or zinser at sysdev.deutsche-boerse.com>
+# <zinser at zinser.no-ip.info or martin.zinser at eurexchange.com>
 
 OBJS = adler32.obj, compress.obj, crc32.obj, gzclose.obj, gzlib.obj\
        gzread.obj, gzwrite.obj, uncompr.obj, infback.obj\
@@ -407,10 +434,9 @@
 $ eod
 $ write out "CFLAGS=", ccopt
 $ write out "LOPTS=", lopts
+$ write out "all : example.exe minigzip.exe libz.olb"
 $ copy sys$input: out
 $ deck
-
-all : example.exe minigzip.exe libz.olb
         @ write sys$output " Example applications available"
 
 libz.olb : libz.olb($(OBJS))
@@ -420,7 +446,7 @@
               link $(LOPTS) example,libz.olb/lib
 
 minigzip.exe : minigzip.obj libz.olb
-              link $(LOPTS) minigzip,libz.olb/lib,x11vms:xvmsutils.olb/lib
+              link $(LOPTS) minigzip,libz.olb/lib
 
 clean :
 	delete *.obj;*,libz.olb;*,*.opt;*,*.exe;*
@@ -431,7 +457,7 @@
 compress.obj : compress.c zlib.h zconf.h
 crc32.obj    : crc32.c zutil.h zlib.h zconf.h
 deflate.obj  : deflate.c deflate.h zutil.h zlib.h zconf.h
-example.obj  : example.c zlib.h zconf.h
+example.obj  : [.test]example.c zlib.h zconf.h
 gzclose.obj  : gzclose.c zutil.h zlib.h zconf.h
 gzlib.obj    : gzlib.c zutil.h zlib.h zconf.h
 gzread.obj   : gzread.c zutil.h zlib.h zconf.h
@@ -439,7 +465,7 @@
 inffast.obj  : inffast.c zutil.h zlib.h zconf.h inftrees.h inffast.h
 inflate.obj  : inflate.c zutil.h zlib.h zconf.h
 inftrees.obj : inftrees.c zutil.h zlib.h zconf.h inftrees.h
-minigzip.obj : minigzip.c zlib.h zconf.h
+minigzip.obj : [.test]minigzip.c zlib.h zconf.h
 trees.obj    : trees.c deflate.h zutil.h zlib.h zconf.h
 uncompr.obj  : uncompr.c zlib.h zconf.h
 zutil.obj    : zutil.c zutil.h zlib.h zconf.h
@@ -455,13 +481,18 @@
 $CREA_OLIST:
 $ open/read min makefile.in
 $ open/write mod modules.opt
-$ src_check = "OBJC ="
+$ src_check_list = "OBJZ =#OBJG ="
 $MRLOOP:
 $ read/end=mrdone min rec
-$ if (f$extract(0,6,rec) .nes. src_check) then goto mrloop
+$ i = 0
+$SRC_CHECK_LOOP:
+$ src_check = f$element(i, "#", src_check_list)
+$ i = i+1
+$ if src_check .eqs. "#" then goto mrloop
+$ if (f$extract(0,6,rec) .nes. src_check) then goto src_check_loop
 $ rec = rec - src_check
 $ gosub extra_filnam
-$ if (f$element(1,"\",rec) .eqs. "\") then goto mrdone
+$ if (f$element(1,"\",rec) .eqs. "\") then goto mrloop
 $MRSLOOP:
 $ read/end=mrdone min rec
 $ gosub extra_filnam
@@ -672,124 +703,6 @@
 $ return
 $!------------------------------------------------------------------------------
 $!
-$! Analyze Object files for OpenVMS AXP to extract Procedure and Data
-$! information to build a symbol vector for a shareable image
-$! All the "brains" of this logic was suggested by Hartmut Becker
-$! (Hartmut.Becker at compaq.com). All the bugs were introduced by me
-$! (zinser at zinser.no-ip.info), so if you do have problem reports please do not
-$! bother Hartmut/HP, but get in touch with me
-$!
-$! Version history
-$! 0.01 20040406 Skip over shareable images in option file
-$! 0.02 20041109 Fix option file for shareable images with case_sensitive=YES
-$! 0.03 20050107 Skip over Identification labels in option file
-$! 0.04 20060117 Add uppercase alias to code compiled with /name=as_is
-$!
-$ ANAL_OBJ_AXP: Subroutine
-$ V = 'F$Verify(0)
-$ SAY := "WRITE_ SYS$OUTPUT"
-$
-$ IF F$SEARCH("''P1'") .EQS. ""
-$ THEN
-$    SAY "ANAL_OBJ_AXP-E-NOSUCHFILE:  Error, inputfile ''p1' not available"
-$    goto exit_aa
-$ ENDIF
-$ IF "''P2'" .EQS. ""
-$ THEN
-$    SAY "ANAL_OBJ_AXP:  Error, no output file provided"
-$    goto exit_aa
-$ ENDIF
-$
-$ open/read in 'p1
-$ create a.tmp
-$ open/append atmp a.tmp
-$ loop:
-$ read/end=end_loop in line
-$ if f$locate("/SHARE",f$edit(line,"upcase")) .lt. f$length(line)
-$ then
-$   write sys$output "ANAL_SKP_SHR-i-skipshare, ''line'"
-$   goto loop
-$ endif
-$ if f$locate("IDENTIFICATION=",f$edit(line,"upcase")) .lt. f$length(line)
-$ then
-$   write sys$output "ANAL_OBJ_AXP-i-ident: Identification ", -
-                     f$element(1,"=",line)
-$   goto loop
-$ endif
-$ f= f$search(line)
-$ if f .eqs. ""
-$ then
-$	write sys$output "ANAL_OBJ_AXP-w-nosuchfile, ''line'"
-$	goto loop
-$ endif
-$ define/user sys$output nl:
-$ define/user sys$error nl:
-$ anal/obj/gsd 'f /out=x.tmp
-$ open/read xtmp x.tmp
-$ XLOOP:
-$ read/end=end_xloop xtmp xline
-$ xline = f$edit(xline,"compress")
-$ write atmp xline
-$ goto xloop
-$ END_XLOOP:
-$ close xtmp
-$ goto loop
-$ end_loop:
-$ close in
-$ close atmp
-$ if f$search("a.tmp") .eqs. "" -
-	then $ exit
-$ ! all global definitions
-$ search a.tmp "symbol:","EGSY$V_DEF 1","EGSY$V_NORM 1"/out=b.tmp
-$ ! all procedures
-$ search b.tmp "EGSY$V_NORM 1"/wind=(0,1) /out=c.tmp
-$ search c.tmp "symbol:"/out=d.tmp
-$ define/user sys$output nl:
-$ edito/edt/command=sys$input d.tmp
-sub/symbol: "/symbol_vector=(/whole
-sub/"/=PROCEDURE)/whole
-exit
-$ ! all data
-$ search b.tmp "EGSY$V_DEF 1"/wind=(0,1) /out=e.tmp
-$ search e.tmp "symbol:"/out=f.tmp
-$ define/user sys$output nl:
-$ edito/edt/command=sys$input f.tmp
-sub/symbol: "/symbol_vector=(/whole
-sub/"/=DATA)/whole
-exit
-$ sort/nodupl d.tmp,f.tmp g.tmp
-$ open/read raw_vector g.tmp
-$ open/write case_vector 'p2'
-$ RAWLOOP:
-$ read/end=end_rawloop raw_vector raw_element
-$ write case_vector raw_element
-$ if f$locate("=PROCEDURE)",raw_element) .lt. f$length(raw_element)
-$ then
-$     name = f$element(1,"=",raw_element) - "("
-$     if f$edit(name,"UPCASE") .nes. name then -
-          write case_vector f$fao(" symbol_vector=(!AS/!AS=PROCEDURE)", -
-	                          f$edit(name,"UPCASE"), name)
-$ endif
-$ if f$locate("=DATA)",raw_element) .lt. f$length(raw_element)
-$ then
-$     name = f$element(1,"=",raw_element) - "("
-$     if f$edit(name,"UPCASE") .nes. name then -
-          write case_vector f$fao(" symbol_vector=(!AS/!AS=DATA)", -
-	                          f$edit(name,"UPCASE"), name)
-$ endif
-$ goto rawloop
-$ END_RAWLOOP:
-$ close raw_vector
-$ close case_vector
-$ delete a.tmp;*,b.tmp;*,c.tmp;*,d.tmp;*,e.tmp;*,f.tmp;*,g.tmp;*
-$ if f$search("x.tmp") .nes. "" -
-	then $ delete x.tmp;*
-$!
-$ EXIT_AA:
-$ if V then set verify
-$ endsubroutine
-$!------------------------------------------------------------------------------
-$!
 $! Write configuration to both permanent and temporary config file
 $!
 $! Version history
@@ -802,3 +715,153 @@
 $  close confh
 $ENDSUBROUTINE
 $!------------------------------------------------------------------------------
+$!
+$! Analyze the project map file and create the symbol vector for a shareable
+$! image from it
+$!
+$! Version history
+$! 0.01 20120128 First version
+$! 0.02 20120226 Add pre-load logic
+$!
+$ MAP_2_SHOPT: Subroutine
+$!
+$ SAY := "WRITE_ SYS$OUTPUT"
+$!
+$ IF F$SEARCH("''P1'") .EQS. ""
+$ THEN
+$    SAY "MAP_2_SHOPT-E-NOSUCHFILE:  Error, inputfile ''p1' not available"
+$    goto exit_m2s
+$ ENDIF
+$ IF "''P2'" .EQS. ""
+$ THEN
+$    SAY "MAP_2_SHOPT:  Error, no output file provided"
+$    goto exit_m2s
+$ ENDIF
+$!
+$ module1 = "deflate#deflateEnd#deflateInit_#deflateParams#deflateSetDictionary"
+$ module2 = "gzclose#gzerror#gzgetc#gzgets#gzopen#gzprintf#gzputc#gzputs#gzread"
+$ module3 = "gzseek#gztell#inflate#inflateEnd#inflateInit_#inflateSetDictionary"
+$ module4 = "inflateSync#uncompress#zlibVersion#compress"
+$ open/read map 'p1
+$ if axp .or. ia64
+$ then
+$     open/write aopt a.opt
+$     open/write bopt b.opt
+$     write aopt " CASE_SENSITIVE=YES"
+$     write bopt "SYMBOL_VECTOR= (-"
+$     mod_sym_num = 1
+$ MOD_SYM_LOOP:
+$     if f$type(module'mod_sym_num') .nes. ""
+$     then
+$         mod_in = 0
+$ MOD_SYM_IN:
+$         shared_proc = f$element(mod_in, "#", module'mod_sym_num')
+$         if shared_proc .nes. "#"
+$         then
+$             write aopt f$fao(" symbol_vector=(!AS/!AS=PROCEDURE)",-
+        		       f$edit(shared_proc,"upcase"),shared_proc)
+$             write bopt f$fao("!AS=PROCEDURE,-",shared_proc)
+$             mod_in = mod_in + 1
+$             goto mod_sym_in
+$         endif
+$         mod_sym_num = mod_sym_num + 1
+$         goto mod_sym_loop
+$     endif
+$MAP_LOOP:
+$     read/end=map_end map line
+$     if (f$locate("{",line).lt. f$length(line)) .or. -
+         (f$locate("global:", line) .lt. f$length(line))
+$     then
+$         proc = true
+$         goto map_loop
+$     endif
+$     if f$locate("}",line).lt. f$length(line) then proc = false
+$     if f$locate("local:", line) .lt. f$length(line) then proc = false
+$     if proc
+$     then
+$         shared_proc = f$edit(line,"collapse")
+$         chop_semi = f$locate(";", shared_proc)
+$         if chop_semi .lt. f$length(shared_proc) then -
+              shared_proc = f$extract(0, chop_semi, shared_proc)
+$         write aopt f$fao(" symbol_vector=(!AS/!AS=PROCEDURE)",-
+        			 f$edit(shared_proc,"upcase"),shared_proc)
+$         write bopt f$fao("!AS=PROCEDURE,-",shared_proc)
+$     endif
+$     goto map_loop
+$MAP_END:
+$     close/nolog aopt
+$     close/nolog bopt
+$     open/append libopt 'p2'
+$     open/read aopt a.opt
+$     open/read bopt b.opt
+$ALOOP:
+$     read/end=aloop_end aopt line
+$     write libopt line
+$     goto aloop
+$ALOOP_END:
+$     close/nolog aopt
+$     sv = ""
+$BLOOP:
+$     read/end=bloop_end bopt svn
+$     if (svn.nes."")
+$     then
+$        if (sv.nes."") then write libopt sv
+$        sv = svn
+$     endif
+$     goto bloop
+$BLOOP_END:
+$     write libopt f$extract(0,f$length(sv)-2,sv), "-"
+$     write libopt ")"
+$     close/nolog bopt
+$     delete/nolog/noconf a.opt;*,b.opt;*
+$ else
+$     if vax
+$     then
+$     open/append libopt 'p2'
+$     mod_sym_num = 1
+$ VMOD_SYM_LOOP:
+$     if f$type(module'mod_sym_num') .nes. ""
+$     then
+$         mod_in = 0
+$ VMOD_SYM_IN:
+$         shared_proc = f$element(mod_in, "#", module'mod_sym_num')
+$         if shared_proc .nes. "#"
+$         then
+$     	      write libopt f$fao("UNIVERSAL=!AS",-
+      	  			     f$edit(shared_proc,"upcase"))
+$             mod_in = mod_in + 1
+$             goto vmod_sym_in
+$         endif
+$         mod_sym_num = mod_sym_num + 1
+$         goto vmod_sym_loop
+$     endif
+$VMAP_LOOP:
+$     	  read/end=vmap_end map line
+$     	  if (f$locate("{",line).lt. f$length(line)) .or. -
+   	      (f$locate("global:", line) .lt. f$length(line))
+$     	  then
+$     	      proc = true
+$     	      goto vmap_loop
+$     	  endif
+$     	  if f$locate("}",line).lt. f$length(line) then proc = false
+$     	  if f$locate("local:", line) .lt. f$length(line) then proc = false
+$     	  if proc
+$     	  then
+$     	      shared_proc = f$edit(line,"collapse")
+$     	      chop_semi = f$locate(";", shared_proc)
+$     	      if chop_semi .lt. f$length(shared_proc) then -
+      	  	  shared_proc = f$extract(0, chop_semi, shared_proc)
+$     	      write libopt f$fao("UNIVERSAL=!AS",-
+      	  			     f$edit(shared_proc,"upcase"))
+$     	  endif
+$     	  goto vmap_loop
+$VMAP_END:
+$     else
+$         write sys$output "Unknown Architecture (Not VAX, AXP, or IA64)"
+$         write sys$output "No options file created"
+$     endif
+$ endif
+$ EXIT_M2S:
+$ close/nolog map
+$ close/nolog libopt
+$ endsubroutine
diff --git a/Modules/zlib/minigzip.c b/Modules/zlib/minigzip.c
--- a/Modules/zlib/minigzip.c
+++ b/Modules/zlib/minigzip.c
@@ -1,5 +1,5 @@
 /* minigzip.c -- simulate gzip using the zlib compression library
- * Copyright (C) 1995-2006, 2010 Jean-loup Gailly.
+ * Copyright (C) 1995-2006, 2010, 2011 Jean-loup Gailly.
  * For conditions of distribution and use, see copyright notice in zlib.h
  */
 
@@ -40,6 +40,10 @@
 #  define SET_BINARY_MODE(file)
 #endif
 
+#ifdef _MSC_VER
+#  define snprintf _snprintf
+#endif
+
 #ifdef VMS
 #  define unlink delete
 #  define GZ_SUFFIX "-gz"
@@ -138,6 +142,197 @@
 #  define local
 #endif
 
+#ifdef Z_SOLO
+/* for Z_SOLO, create simplified gz* functions using deflate and inflate */
+
+#if defined(Z_HAVE_UNISTD_H) || defined(Z_LARGE)
+#  include <unistd.h>       /* for unlink() */
+#endif
+
+void *myalloc OF((void *, unsigned, unsigned));
+void myfree OF((void *, void *));
+
+void *myalloc(q, n, m)
+    void *q;
+    unsigned n, m;
+{
+    q = Z_NULL;
+    return calloc(n, m);
+}
+
+void myfree(q, p)
+    void *q, *p;
+{
+    q = Z_NULL;
+    free(p);
+}
+
+typedef struct gzFile_s {
+    FILE *file;
+    int write;
+    int err;
+    char *msg;
+    z_stream strm;
+} *gzFile;
+
+gzFile gzopen OF((const char *, const char *));
+gzFile gzdopen OF((int, const char *));
+gzFile gz_open OF((const char *, int, const char *));
+
+gzFile gzopen(path, mode)
+const char *path;
+const char *mode;
+{
+    return gz_open(path, -1, mode);
+}
+
+gzFile gzdopen(fd, mode)
+int fd;
+const char *mode;
+{
+    return gz_open(NULL, fd, mode);
+}
+
+gzFile gz_open(path, fd, mode)
+    const char *path;
+    int fd;
+    const char *mode;
+{
+    gzFile gz;
+    int ret;
+
+    gz = malloc(sizeof(struct gzFile_s));
+    if (gz == NULL)
+        return NULL;
+    gz->write = strchr(mode, 'w') != NULL;
+    gz->strm.zalloc = myalloc;
+    gz->strm.zfree = myfree;
+    gz->strm.opaque = Z_NULL;
+    if (gz->write)
+        ret = deflateInit2(&(gz->strm), -1, 8, 15 + 16, 8, 0);
+    else {
+        gz->strm.next_in = 0;
+        gz->strm.avail_in = Z_NULL;
+        ret = inflateInit2(&(gz->strm), 15 + 16);
+    }
+    if (ret != Z_OK) {
+        free(gz);
+        return NULL;
+    }
+    gz->file = path == NULL ? fdopen(fd, gz->write ? "wb" : "rb") :
+                              fopen(path, gz->write ? "wb" : "rb");
+    if (gz->file == NULL) {
+        gz->write ? deflateEnd(&(gz->strm)) : inflateEnd(&(gz->strm));
+        free(gz);
+        return NULL;
+    }
+    gz->err = 0;
+    gz->msg = "";
+    return gz;
+}
+
+int gzwrite OF((gzFile, const void *, unsigned));
+
+int gzwrite(gz, buf, len)
+    gzFile gz;
+    const void *buf;
+    unsigned len;
+{
+    z_stream *strm;
+    unsigned char out[BUFLEN];
+
+    if (gz == NULL || !gz->write)
+        return 0;
+    strm = &(gz->strm);
+    strm->next_in = (void *)buf;
+    strm->avail_in = len;
+    do {
+        strm->next_out = out;
+        strm->avail_out = BUFLEN;
+        (void)deflate(strm, Z_NO_FLUSH);
+        fwrite(out, 1, BUFLEN - strm->avail_out, gz->file);
+    } while (strm->avail_out == 0);
+    return len;
+}
+
+int gzread OF((gzFile, void *, unsigned));
+
+int gzread(gz, buf, len)
+    gzFile gz;
+    void *buf;
+    unsigned len;
+{
+    int ret;
+    unsigned got;
+    unsigned char in[1];
+    z_stream *strm;
+
+    if (gz == NULL || gz->write)
+        return 0;
+    if (gz->err)
+        return 0;
+    strm = &(gz->strm);
+    strm->next_out = (void *)buf;
+    strm->avail_out = len;
+    do {
+        got = fread(in, 1, 1, gz->file);
+        if (got == 0)
+            break;
+        strm->next_in = in;
+        strm->avail_in = 1;
+        ret = inflate(strm, Z_NO_FLUSH);
+        if (ret == Z_DATA_ERROR) {
+            gz->err = Z_DATA_ERROR;
+            gz->msg = strm->msg;
+            return 0;
+        }
+        if (ret == Z_STREAM_END)
+            inflateReset(strm);
+    } while (strm->avail_out);
+    return len - strm->avail_out;
+}
+
+int gzclose OF((gzFile));
+
+int gzclose(gz)
+    gzFile gz;
+{
+    z_stream *strm;
+    unsigned char out[BUFLEN];
+
+    if (gz == NULL)
+        return Z_STREAM_ERROR;
+    strm = &(gz->strm);
+    if (gz->write) {
+        strm->next_in = Z_NULL;
+        strm->avail_in = 0;
+        do {
+            strm->next_out = out;
+            strm->avail_out = BUFLEN;
+            (void)deflate(strm, Z_FINISH);
+            fwrite(out, 1, BUFLEN - strm->avail_out, gz->file);
+        } while (strm->avail_out == 0);
+        deflateEnd(strm);
+    }
+    else
+        inflateEnd(strm);
+    fclose(gz->file);
+    free(gz);
+    return Z_OK;
+}
+
+const char *gzerror OF((gzFile, int *));
+
+const char *gzerror(gz, err)
+    gzFile gz;
+    int *err;
+{
+    *err = gz->err;
+    return gz->msg;
+}
+
+#endif
+
 char *prog;
 
 void error            OF((const char *msg));
@@ -272,8 +467,12 @@
         exit(1);
     }
 
+#if !defined(NO_snprintf) && !defined(NO_vsnprintf)
+    snprintf(outfile, sizeof(outfile), "%s%s", file, GZ_SUFFIX);
+#else
     strcpy(outfile, file);
     strcat(outfile, GZ_SUFFIX);
+#endif
 
     in = fopen(file, "rb");
     if (in == NULL) {
@@ -308,7 +507,11 @@
         exit(1);
     }
 
+#if !defined(NO_snprintf) && !defined(NO_vsnprintf)
+    snprintf(buf, sizeof(buf), "%s", file);
+#else
     strcpy(buf, file);
+#endif
 
     if (len > SUFFIX_LEN && strcmp(file+len-SUFFIX_LEN, GZ_SUFFIX) == 0) {
         infile = file;
@@ -317,7 +520,11 @@
     } else {
         outfile = file;
         infile = buf;
+#if !defined(NO_snprintf) && !defined(NO_vsnprintf)
+        snprintf(buf + len, sizeof(buf) - len, "%s", GZ_SUFFIX);
+#else
         strcat(infile, GZ_SUFFIX);
+#endif
     }
     in = gzopen(infile, "rb");
     if (in == NULL) {
@@ -355,7 +562,11 @@
     gzFile file;
     char *bname, outmode[20];
 
+#if !defined(NO_snprintf) && !defined(NO_vsnprintf)
+    snprintf(outmode, sizeof(outmode), "%s", "wb6 ");
+#else
     strcpy(outmode, "wb6 ");
+#endif
 
     prog = argv[0];
     bname = strrchr(argv[0], '/');
diff --git a/Modules/zlib/trees.c b/Modules/zlib/trees.c
--- a/Modules/zlib/trees.c
+++ b/Modules/zlib/trees.c
@@ -1,5 +1,5 @@
 /* trees.c -- output deflated data using Huffman coding
- * Copyright (C) 1995-2010 Jean-loup Gailly
+ * Copyright (C) 1995-2012 Jean-loup Gailly
  * detect_data_type() function provided freely by Cosmin Truta, 2006
  * For conditions of distribution and use, see copyright notice in zlib.h
  */
@@ -74,11 +74,6 @@
  * probability, to avoid transmitting the lengths for unused bit length codes.
  */
 
-#define Buf_size (8 * 2*sizeof(char))
-/* Number of bits used within bi_buf. (bi_buf might be implemented on
- * more than 16 bits on some systems.)
- */
-
 /* ===========================================================================
  * Local data. These are initialized only once.
  */
@@ -151,8 +146,8 @@
 local int  build_bl_tree  OF((deflate_state *s));
 local void send_all_trees OF((deflate_state *s, int lcodes, int dcodes,
                               int blcodes));
-local void compress_block OF((deflate_state *s, ct_data *ltree,
-                              ct_data *dtree));
+local void compress_block OF((deflate_state *s, const ct_data *ltree,
+                              const ct_data *dtree));
 local int  detect_data_type OF((deflate_state *s));
 local unsigned bi_reverse OF((unsigned value, int length));
 local void bi_windup      OF((deflate_state *s));
@@ -399,7 +394,6 @@
 
     s->bi_buf = 0;
     s->bi_valid = 0;
-    s->last_eob_len = 8; /* enough lookahead for inflate */
 #ifdef DEBUG
     s->compressed_len = 0L;
     s->bits_sent = 0L;
@@ -883,15 +877,17 @@
 }
 
 /* ===========================================================================
+ * Flush the bits in the bit buffer to pending output (leaves at most 7 bits)
+ */
+void ZLIB_INTERNAL _tr_flush_bits(s)
+    deflate_state *s;
+{
+    bi_flush(s);
+}
+
+/* ===========================================================================
  * Send one empty static block to give enough lookahead for inflate.
  * This takes 10 bits, of which 7 may remain in the bit buffer.
- * The current inflate code requires 9 bits of lookahead. If the
- * last two codes for the previous block (real code plus EOB) were coded
- * on 5 bits or less, inflate may have only 5+3 bits of lookahead to decode
- * the last real code. In this case we send two empty static blocks instead
- * of one. (There are no problems if the previous block is stored or fixed.)
- * To simplify the code, we assume the worst case of last real code encoded
- * on one bit only.
  */
 void ZLIB_INTERNAL _tr_align(s)
     deflate_state *s;
@@ -902,20 +898,6 @@
     s->compressed_len += 10L; /* 3 for block type, 7 for EOB */
 #endif
     bi_flush(s);
-    /* Of the 10 bits for the empty block, we have already sent
-     * (10 - bi_valid) bits. The lookahead for the last real code (before
-     * the EOB of the previous block) was thus at least one plus the length
-     * of the EOB plus what we have just sent of the empty static block.
-     */
-    if (1 + s->last_eob_len + 10 - s->bi_valid < 9) {
-        send_bits(s, STATIC_TREES<<1, 3);
-        send_code(s, END_BLOCK, static_ltree);
-#ifdef DEBUG
-        s->compressed_len += 10L;
-#endif
-        bi_flush(s);
-    }
-    s->last_eob_len = 7;
 }
 
 /* ===========================================================================
@@ -990,7 +972,8 @@
     } else if (s->strategy == Z_FIXED || static_lenb == opt_lenb) {
 #endif
         send_bits(s, (STATIC_TREES<<1)+last, 3);
-        compress_block(s, (ct_data *)static_ltree, (ct_data *)static_dtree);
+        compress_block(s, (const ct_data *)static_ltree,
+                       (const ct_data *)static_dtree);
 #ifdef DEBUG
         s->compressed_len += 3 + s->static_len;
 #endif
@@ -998,7 +981,8 @@
         send_bits(s, (DYN_TREES<<1)+last, 3);
         send_all_trees(s, s->l_desc.max_code+1, s->d_desc.max_code+1,
                        max_blindex+1);
-        compress_block(s, (ct_data *)s->dyn_ltree, (ct_data *)s->dyn_dtree);
+        compress_block(s, (const ct_data *)s->dyn_ltree,
+                       (const ct_data *)s->dyn_dtree);
 #ifdef DEBUG
         s->compressed_len += 3 + s->opt_len;
 #endif
@@ -1075,8 +1059,8 @@
  */
 local void compress_block(s, ltree, dtree)
     deflate_state *s;
-    ct_data *ltree; /* literal tree */
-    ct_data *dtree; /* distance tree */
+    const ct_data *ltree; /* literal tree */
+    const ct_data *dtree; /* distance tree */
 {
     unsigned dist;      /* distance of matched string */
     int lc;             /* match length or unmatched char (if dist == 0) */
@@ -1118,7 +1102,6 @@
     } while (lx < s->last_lit);
 
     send_code(s, END_BLOCK, ltree);
-    s->last_eob_len = ltree[END_BLOCK].Len;
 }
 
 /* ===========================================================================
@@ -1226,7 +1209,6 @@
     int      header;  /* true if block header must be written */
 {
     bi_windup(s);        /* align on byte boundary */
-    s->last_eob_len = 8; /* enough lookahead for inflate */
 
     if (header) {
         put_short(s, (ush)len);
diff --git a/Modules/zlib/uncompr.c b/Modules/zlib/uncompr.c
--- a/Modules/zlib/uncompr.c
+++ b/Modules/zlib/uncompr.c
@@ -30,7 +30,7 @@
     z_stream stream;
     int err;
 
-    stream.next_in = (Bytef*)source;
+    stream.next_in = (z_const Bytef *)source;
     stream.avail_in = (uInt)sourceLen;
     /* Check for source > 64K on 16-bit machine: */
     if ((uLong)stream.avail_in != sourceLen) return Z_BUF_ERROR;
diff --git a/Modules/zlib/zconf.h b/Modules/zlib/zconf.h
--- a/Modules/zlib/zconf.h
+++ b/Modules/zlib/zconf.h
@@ -1,5 +1,5 @@
 /* zconf.h -- configuration of the zlib compression library
- * Copyright (C) 1995-2010 Jean-loup Gailly.
+ * Copyright (C) 1995-2013 Jean-loup Gailly.
  * For conditions of distribution and use, see copyright notice in zlib.h
  */
 
@@ -15,11 +15,13 @@
  * this permanently in zconf.h using "./configure --zprefix".
  */
 #ifdef Z_PREFIX     /* may be set to #if 1 by ./configure */
+#  define Z_PREFIX_SET
 
 /* all linked symbols */
 #  define _dist_code            z__dist_code
 #  define _length_code          z__length_code
 #  define _tr_align             z__tr_align
+#  define _tr_flush_bits        z__tr_flush_bits
 #  define _tr_flush_block       z__tr_flush_block
 #  define _tr_init              z__tr_init
 #  define _tr_stored_block      z__tr_stored_block
@@ -27,9 +29,11 @@
 #  define adler32               z_adler32
 #  define adler32_combine       z_adler32_combine
 #  define adler32_combine64     z_adler32_combine64
-#  define compress              z_compress
-#  define compress2             z_compress2
-#  define compressBound         z_compressBound
+#  ifndef Z_SOLO
+#    define compress              z_compress
+#    define compress2             z_compress2
+#    define compressBound         z_compressBound
+#  endif
 #  define crc32                 z_crc32
 #  define crc32_combine         z_crc32_combine
 #  define crc32_combine64       z_crc32_combine64
@@ -40,44 +44,53 @@
 #  define deflateInit2_         z_deflateInit2_
 #  define deflateInit_          z_deflateInit_
 #  define deflateParams         z_deflateParams
+#  define deflatePending        z_deflatePending
 #  define deflatePrime          z_deflatePrime
 #  define deflateReset          z_deflateReset
+#  define deflateResetKeep      z_deflateResetKeep
 #  define deflateSetDictionary  z_deflateSetDictionary
 #  define deflateSetHeader      z_deflateSetHeader
 #  define deflateTune           z_deflateTune
 #  define deflate_copyright     z_deflate_copyright
 #  define get_crc_table         z_get_crc_table
-#  define gz_error              z_gz_error
-#  define gz_intmax             z_gz_intmax
-#  define gz_strwinerror        z_gz_strwinerror
-#  define gzbuffer              z_gzbuffer
-#  define gzclearerr            z_gzclearerr
-#  define gzclose               z_gzclose
-#  define gzclose_r             z_gzclose_r
-#  define gzclose_w             z_gzclose_w
-#  define gzdirect              z_gzdirect
-#  define gzdopen               z_gzdopen
-#  define gzeof                 z_gzeof
-#  define gzerror               z_gzerror
-#  define gzflush               z_gzflush
-#  define gzgetc                z_gzgetc
-#  define gzgets                z_gzgets
-#  define gzoffset              z_gzoffset
-#  define gzoffset64            z_gzoffset64
-#  define gzopen                z_gzopen
-#  define gzopen64              z_gzopen64
-#  define gzprintf              z_gzprintf
-#  define gzputc                z_gzputc
-#  define gzputs                z_gzputs
-#  define gzread                z_gzread
-#  define gzrewind              z_gzrewind
-#  define gzseek                z_gzseek
-#  define gzseek64              z_gzseek64
-#  define gzsetparams           z_gzsetparams
-#  define gztell                z_gztell
-#  define gztell64              z_gztell64
-#  define gzungetc              z_gzungetc
-#  define gzwrite               z_gzwrite
+#  ifndef Z_SOLO
+#    define gz_error              z_gz_error
+#    define gz_intmax             z_gz_intmax
+#    define gz_strwinerror        z_gz_strwinerror
+#    define gzbuffer              z_gzbuffer
+#    define gzclearerr            z_gzclearerr
+#    define gzclose               z_gzclose
+#    define gzclose_r             z_gzclose_r
+#    define gzclose_w             z_gzclose_w
+#    define gzdirect              z_gzdirect
+#    define gzdopen               z_gzdopen
+#    define gzeof                 z_gzeof
+#    define gzerror               z_gzerror
+#    define gzflush               z_gzflush
+#    define gzgetc                z_gzgetc
+#    define gzgetc_               z_gzgetc_
+#    define gzgets                z_gzgets
+#    define gzoffset              z_gzoffset
+#    define gzoffset64            z_gzoffset64
+#    define gzopen                z_gzopen
+#    define gzopen64              z_gzopen64
+#    ifdef _WIN32
+#      define gzopen_w              z_gzopen_w
+#    endif
+#    define gzprintf              z_gzprintf
+#    define gzvprintf             z_gzvprintf
+#    define gzputc                z_gzputc
+#    define gzputs                z_gzputs
+#    define gzread                z_gzread
+#    define gzrewind              z_gzrewind
+#    define gzseek                z_gzseek
+#    define gzseek64              z_gzseek64
+#    define gzsetparams           z_gzsetparams
+#    define gztell                z_gztell
+#    define gztell64              z_gztell64
+#    define gzungetc              z_gzungetc
+#    define gzwrite               z_gzwrite
+#  endif
 #  define inflate               z_inflate
 #  define inflateBack           z_inflateBack
 #  define inflateBackEnd        z_inflateBackEnd
@@ -92,16 +105,22 @@
 #  define inflateReset          z_inflateReset
 #  define inflateReset2         z_inflateReset2
 #  define inflateSetDictionary  z_inflateSetDictionary
+#  define inflateGetDictionary  z_inflateGetDictionary
 #  define inflateSync           z_inflateSync
 #  define inflateSyncPoint      z_inflateSyncPoint
 #  define inflateUndermine      z_inflateUndermine
+#  define inflateResetKeep      z_inflateResetKeep
 #  define inflate_copyright     z_inflate_copyright
 #  define inflate_fast          z_inflate_fast
 #  define inflate_table         z_inflate_table
-#  define uncompress            z_uncompress
+#  ifndef Z_SOLO
+#    define uncompress            z_uncompress
+#  endif
 #  define zError                z_zError
-#  define zcalloc               z_zcalloc
-#  define zcfree                z_zcfree
+#  ifndef Z_SOLO
+#    define zcalloc               z_zcalloc
+#    define zcfree                z_zcfree
+#  endif
 #  define zlibCompileFlags      z_zlibCompileFlags
 #  define zlibVersion           z_zlibVersion
 
@@ -111,7 +130,9 @@
 #  define alloc_func            z_alloc_func
 #  define charf                 z_charf
 #  define free_func             z_free_func
-#  define gzFile                z_gzFile
+#  ifndef Z_SOLO
+#    define gzFile                z_gzFile
+#  endif
 #  define gz_header             z_gz_header
 #  define gz_headerp            z_gz_headerp
 #  define in_func               z_in_func
@@ -197,6 +218,12 @@
 #  endif
 #endif
 
+#if defined(ZLIB_CONST) && !defined(z_const)
+#  define z_const const
+#else
+#  define z_const
+#endif
+
 /* Some Mac compilers merge all .h files incorrectly: */
 #if defined(__MWERKS__)||defined(applec)||defined(THINK_C)||defined(__SC__)
 #  define NO_DUMMY_DECL
@@ -243,6 +270,14 @@
 #  endif
 #endif
 
+#ifndef Z_ARG /* function prototypes for stdarg */
+#  if defined(STDC) || defined(Z_HAVE_STDARG_H)
+#    define Z_ARG(args)  args
+#  else
+#    define Z_ARG(args)  ()
+#  endif
+#endif
+
 /* The following definitions for FAR are needed only for MSDOS mixed
  * model programming (small or medium model with some far allocations).
  * This was tested only with MSC; for other MSDOS compilers you may have
@@ -356,12 +391,47 @@
    typedef Byte       *voidp;
 #endif
 
+#if !defined(Z_U4) && !defined(Z_SOLO) && defined(STDC)
+#  include <limits.h>
+#  if (UINT_MAX == 0xffffffffUL)
+#    define Z_U4 unsigned
+#  elif (ULONG_MAX == 0xffffffffUL)
+#    define Z_U4 unsigned long
+#  elif (USHRT_MAX == 0xffffffffUL)
+#    define Z_U4 unsigned short
+#  endif
+#endif
+
+#ifdef Z_U4
+   typedef Z_U4 z_crc_t;
+#else
+   typedef unsigned long z_crc_t;
+#endif
+
 #ifdef HAVE_UNISTD_H    /* may be set to #if 1 by ./configure */
 #  define Z_HAVE_UNISTD_H
 #endif
 
+#ifdef HAVE_STDARG_H    /* may be set to #if 1 by ./configure */
+#  define Z_HAVE_STDARG_H
+#endif
+
 #ifdef STDC
-#  include <sys/types.h>    /* for off_t */
+#  ifndef Z_SOLO
+#    include <sys/types.h>      /* for off_t */
+#  endif
+#endif
+
+#if defined(STDC) || defined(Z_HAVE_STDARG_H)
+#  ifndef Z_SOLO
+#    include <stdarg.h>         /* for va_list */
+#  endif
+#endif
+
+#ifdef _WIN32
+#  ifndef Z_SOLO
+#    include <stddef.h>         /* for wchar_t */
+#  endif
 #endif
 
 /* a little trick to accommodate both "#define _LARGEFILE64_SOURCE" and
@@ -370,21 +440,38 @@
  * both "#undef _LARGEFILE64_SOURCE" and "#define _LARGEFILE64_SOURCE 0" as
  * equivalently requesting no 64-bit operations
  */
-#if -_LARGEFILE64_SOURCE - -1 == 1
+#if defined(_LARGEFILE64_SOURCE) && -_LARGEFILE64_SOURCE - -1 == 1
 #  undef _LARGEFILE64_SOURCE
 #endif
 
-#if defined(Z_HAVE_UNISTD_H) || defined(_LARGEFILE64_SOURCE)
-#  include <unistd.h>       /* for SEEK_* and off_t */
-#  ifdef VMS
-#    include <unixio.h>     /* for off_t */
-#  endif
-#  ifndef z_off_t
-#    define z_off_t off_t
+#if defined(__WATCOMC__) && !defined(Z_HAVE_UNISTD_H)
+#  define Z_HAVE_UNISTD_H
+#endif
+#ifndef Z_SOLO
+#  if defined(Z_HAVE_UNISTD_H) || defined(_LARGEFILE64_SOURCE)
+#    include <unistd.h>         /* for SEEK_*, off_t, and _LFS64_LARGEFILE */
+#    ifdef VMS
+#      include <unixio.h>       /* for off_t */
+#    endif
+#    ifndef z_off_t
+#      define z_off_t off_t
+#    endif
 #  endif
 #endif
 
-#ifndef SEEK_SET
+#if defined(_LFS64_LARGEFILE) && _LFS64_LARGEFILE-0
+#  define Z_LFS64
+#endif
+
+#if defined(_LARGEFILE64_SOURCE) && defined(Z_LFS64)
+#  define Z_LARGE64
+#endif
+
+#if defined(_FILE_OFFSET_BITS) && _FILE_OFFSET_BITS-0 == 64 && defined(Z_LFS64)
+#  define Z_WANT64
+#endif
+
+#if !defined(SEEK_SET) && !defined(Z_SOLO)
 #  define SEEK_SET        0       /* Seek from beginning of file.  */
 #  define SEEK_CUR        1       /* Seek from current position.  */
 #  define SEEK_END        2       /* Set file pointer to EOF plus "offset" */
@@ -394,18 +481,14 @@
 #  define z_off_t long
 #endif
 
-#if defined(_LARGEFILE64_SOURCE) && _LFS64_LARGEFILE-0
+#if !defined(_WIN32) && defined(Z_LARGE64)
 #  define z_off64_t off64_t
 #else
-#  define z_off64_t z_off_t
-#endif
-
-#if defined(__OS400__)
-#  define NO_vsnprintf
-#endif
-
-#if defined(__MVS__)
-#  define NO_vsnprintf
+#  if defined(_WIN32) && !defined(__GNUC__) && !defined(Z_SOLO)
+#    define z_off64_t __int64
+#  else
+#    define z_off64_t z_off_t
+#  endif
 #endif
 
 /* MVS linker does not support external names larger than 8 bytes */
diff --git a/Modules/zlib/zconf.h.cmakein b/Modules/zlib/zconf.h.cmakein
--- a/Modules/zlib/zconf.h.cmakein
+++ b/Modules/zlib/zconf.h.cmakein
@@ -1,5 +1,5 @@
 /* zconf.h -- configuration of the zlib compression library
- * Copyright (C) 1995-2010 Jean-loup Gailly.
+ * Copyright (C) 1995-2013 Jean-loup Gailly.
  * For conditions of distribution and use, see copyright notice in zlib.h
  */
 
@@ -17,11 +17,13 @@
  * this permanently in zconf.h using "./configure --zprefix".
  */
 #ifdef Z_PREFIX     /* may be set to #if 1 by ./configure */
+#  define Z_PREFIX_SET
 
 /* all linked symbols */
 #  define _dist_code            z__dist_code
 #  define _length_code          z__length_code
 #  define _tr_align             z__tr_align
+#  define _tr_flush_bits        z__tr_flush_bits
 #  define _tr_flush_block       z__tr_flush_block
 #  define _tr_init              z__tr_init
 #  define _tr_stored_block      z__tr_stored_block
@@ -29,9 +31,11 @@
 #  define adler32               z_adler32
 #  define adler32_combine       z_adler32_combine
 #  define adler32_combine64     z_adler32_combine64
-#  define compress              z_compress
-#  define compress2             z_compress2
-#  define compressBound         z_compressBound
+#  ifndef Z_SOLO
+#    define compress              z_compress
+#    define compress2             z_compress2
+#    define compressBound         z_compressBound
+#  endif
 #  define crc32                 z_crc32
 #  define crc32_combine         z_crc32_combine
 #  define crc32_combine64       z_crc32_combine64
@@ -42,44 +46,53 @@
 #  define deflateInit2_         z_deflateInit2_
 #  define deflateInit_          z_deflateInit_
 #  define deflateParams         z_deflateParams
+#  define deflatePending        z_deflatePending
 #  define deflatePrime          z_deflatePrime
 #  define deflateReset          z_deflateReset
+#  define deflateResetKeep      z_deflateResetKeep
 #  define deflateSetDictionary  z_deflateSetDictionary
 #  define deflateSetHeader      z_deflateSetHeader
 #  define deflateTune           z_deflateTune
 #  define deflate_copyright     z_deflate_copyright
 #  define get_crc_table         z_get_crc_table
-#  define gz_error              z_gz_error
-#  define gz_intmax             z_gz_intmax
-#  define gz_strwinerror        z_gz_strwinerror
-#  define gzbuffer              z_gzbuffer
-#  define gzclearerr            z_gzclearerr
-#  define gzclose               z_gzclose
-#  define gzclose_r             z_gzclose_r
-#  define gzclose_w             z_gzclose_w
-#  define gzdirect              z_gzdirect
-#  define gzdopen               z_gzdopen
-#  define gzeof                 z_gzeof
-#  define gzerror               z_gzerror
-#  define gzflush               z_gzflush
-#  define gzgetc                z_gzgetc
-#  define gzgets                z_gzgets
-#  define gzoffset              z_gzoffset
-#  define gzoffset64            z_gzoffset64
-#  define gzopen                z_gzopen
-#  define gzopen64              z_gzopen64
-#  define gzprintf              z_gzprintf
-#  define gzputc                z_gzputc
-#  define gzputs                z_gzputs
-#  define gzread                z_gzread
-#  define gzrewind              z_gzrewind
-#  define gzseek                z_gzseek
-#  define gzseek64              z_gzseek64
-#  define gzsetparams           z_gzsetparams
-#  define gztell                z_gztell
-#  define gztell64              z_gztell64
-#  define gzungetc              z_gzungetc
-#  define gzwrite               z_gzwrite
+#  ifndef Z_SOLO
+#    define gz_error              z_gz_error
+#    define gz_intmax             z_gz_intmax
+#    define gz_strwinerror        z_gz_strwinerror
+#    define gzbuffer              z_gzbuffer
+#    define gzclearerr            z_gzclearerr
+#    define gzclose               z_gzclose
+#    define gzclose_r             z_gzclose_r
+#    define gzclose_w             z_gzclose_w
+#    define gzdirect              z_gzdirect
+#    define gzdopen               z_gzdopen
+#    define gzeof                 z_gzeof
+#    define gzerror               z_gzerror
+#    define gzflush               z_gzflush
+#    define gzgetc                z_gzgetc
+#    define gzgetc_               z_gzgetc_
+#    define gzgets                z_gzgets
+#    define gzoffset              z_gzoffset
+#    define gzoffset64            z_gzoffset64
+#    define gzopen                z_gzopen
+#    define gzopen64              z_gzopen64
+#    ifdef _WIN32
+#      define gzopen_w              z_gzopen_w
+#    endif
+#    define gzprintf              z_gzprintf
+#    define gzvprintf             z_gzvprintf
+#    define gzputc                z_gzputc
+#    define gzputs                z_gzputs
+#    define gzread                z_gzread
+#    define gzrewind              z_gzrewind
+#    define gzseek                z_gzseek
+#    define gzseek64              z_gzseek64
+#    define gzsetparams           z_gzsetparams
+#    define gztell                z_gztell
+#    define gztell64              z_gztell64
+#    define gzungetc              z_gzungetc
+#    define gzwrite               z_gzwrite
+#  endif
 #  define inflate               z_inflate
 #  define inflateBack           z_inflateBack
 #  define inflateBackEnd        z_inflateBackEnd
@@ -94,16 +107,22 @@
 #  define inflateReset          z_inflateReset
 #  define inflateReset2         z_inflateReset2
 #  define inflateSetDictionary  z_inflateSetDictionary
+#  define inflateGetDictionary  z_inflateGetDictionary
 #  define inflateSync           z_inflateSync
 #  define inflateSyncPoint      z_inflateSyncPoint
 #  define inflateUndermine      z_inflateUndermine
+#  define inflateResetKeep      z_inflateResetKeep
 #  define inflate_copyright     z_inflate_copyright
 #  define inflate_fast          z_inflate_fast
 #  define inflate_table         z_inflate_table
-#  define uncompress            z_uncompress
+#  ifndef Z_SOLO
+#    define uncompress            z_uncompress
+#  endif
 #  define zError                z_zError
-#  define zcalloc               z_zcalloc
-#  define zcfree                z_zcfree
+#  ifndef Z_SOLO
+#    define zcalloc               z_zcalloc
+#    define zcfree                z_zcfree
+#  endif
 #  define zlibCompileFlags      z_zlibCompileFlags
 #  define zlibVersion           z_zlibVersion
 
@@ -113,7 +132,9 @@
 #  define alloc_func            z_alloc_func
 #  define charf                 z_charf
 #  define free_func             z_free_func
-#  define gzFile                z_gzFile
+#  ifndef Z_SOLO
+#    define gzFile                z_gzFile
+#  endif
 #  define gz_header             z_gz_header
 #  define gz_headerp            z_gz_headerp
 #  define in_func               z_in_func
@@ -199,6 +220,12 @@
 #  endif
 #endif
 
+#if defined(ZLIB_CONST) && !defined(z_const)
+#  define z_const const
+#else
+#  define z_const
+#endif
+
 /* Some Mac compilers merge all .h files incorrectly: */
 #if defined(__MWERKS__)||defined(applec)||defined(THINK_C)||defined(__SC__)
 #  define NO_DUMMY_DECL
@@ -245,6 +272,14 @@
 #  endif
 #endif
 
+#ifndef Z_ARG /* function prototypes for stdarg */
+#  if defined(STDC) || defined(Z_HAVE_STDARG_H)
+#    define Z_ARG(args)  args
+#  else
+#    define Z_ARG(args)  ()
+#  endif
+#endif
+
 /* The following definitions for FAR are needed only for MSDOS mixed
  * model programming (small or medium model with some far allocations).
  * This was tested only with MSC; for other MSDOS compilers you may have
@@ -358,12 +393,47 @@
    typedef Byte       *voidp;
 #endif
 
+#if !defined(Z_U4) && !defined(Z_SOLO) && defined(STDC)
+#  include <limits.h>
+#  if (UINT_MAX == 0xffffffffUL)
+#    define Z_U4 unsigned
+#  elif (ULONG_MAX == 0xffffffffUL)
+#    define Z_U4 unsigned long
+#  elif (USHRT_MAX == 0xffffffffUL)
+#    define Z_U4 unsigned short
+#  endif
+#endif
+
+#ifdef Z_U4
+   typedef Z_U4 z_crc_t;
+#else
+   typedef unsigned long z_crc_t;
+#endif
+
 #ifdef HAVE_UNISTD_H    /* may be set to #if 1 by ./configure */
 #  define Z_HAVE_UNISTD_H
 #endif
 
+#ifdef HAVE_STDARG_H    /* may be set to #if 1 by ./configure */
+#  define Z_HAVE_STDARG_H
+#endif
+
 #ifdef STDC
-#  include <sys/types.h>    /* for off_t */
+#  ifndef Z_SOLO
+#    include <sys/types.h>      /* for off_t */
+#  endif
+#endif
+
+#if defined(STDC) || defined(Z_HAVE_STDARG_H)
+#  ifndef Z_SOLO
+#    include <stdarg.h>         /* for va_list */
+#  endif
+#endif
+
+#ifdef _WIN32
+#  ifndef Z_SOLO
+#    include <stddef.h>         /* for wchar_t */
+#  endif
 #endif
 
 /* a little trick to accommodate both "#define _LARGEFILE64_SOURCE" and
@@ -372,21 +442,38 @@
  * both "#undef _LARGEFILE64_SOURCE" and "#define _LARGEFILE64_SOURCE 0" as
  * equivalently requesting no 64-bit operations
  */
-#if -_LARGEFILE64_SOURCE - -1 == 1
+#if defined(_LARGEFILE64_SOURCE) && -_LARGEFILE64_SOURCE - -1 == 1
 #  undef _LARGEFILE64_SOURCE
 #endif
 
-#if defined(Z_HAVE_UNISTD_H) || defined(_LARGEFILE64_SOURCE)
-#  include <unistd.h>       /* for SEEK_* and off_t */
-#  ifdef VMS
-#    include <unixio.h>     /* for off_t */
-#  endif
-#  ifndef z_off_t
-#    define z_off_t off_t
+#if defined(__WATCOMC__) && !defined(Z_HAVE_UNISTD_H)
+#  define Z_HAVE_UNISTD_H
+#endif
+#ifndef Z_SOLO
+#  if defined(Z_HAVE_UNISTD_H) || defined(_LARGEFILE64_SOURCE)
+#    include <unistd.h>         /* for SEEK_*, off_t, and _LFS64_LARGEFILE */
+#    ifdef VMS
+#      include <unixio.h>       /* for off_t */
+#    endif
+#    ifndef z_off_t
+#      define z_off_t off_t
+#    endif
 #  endif
 #endif
 
-#ifndef SEEK_SET
+#if defined(_LFS64_LARGEFILE) && _LFS64_LARGEFILE-0
+#  define Z_LFS64
+#endif
+
+#if defined(_LARGEFILE64_SOURCE) && defined(Z_LFS64)
+#  define Z_LARGE64
+#endif
+
+#if defined(_FILE_OFFSET_BITS) && _FILE_OFFSET_BITS-0 == 64 && defined(Z_LFS64)
+#  define Z_WANT64
+#endif
+
+#if !defined(SEEK_SET) && !defined(Z_SOLO)
 #  define SEEK_SET        0       /* Seek from beginning of file.  */
 #  define SEEK_CUR        1       /* Seek from current position.  */
 #  define SEEK_END        2       /* Set file pointer to EOF plus "offset" */
@@ -396,18 +483,14 @@
 #  define z_off_t long
 #endif
 
-#if defined(_LARGEFILE64_SOURCE) && _LFS64_LARGEFILE-0
+#if !defined(_WIN32) && defined(Z_LARGE64)
 #  define z_off64_t off64_t
 #else
-#  define z_off64_t z_off_t
-#endif
-
-#if defined(__OS400__)
-#  define NO_vsnprintf
-#endif
-
-#if defined(__MVS__)
-#  define NO_vsnprintf
+#  if defined(_WIN32) && !defined(__GNUC__) && !defined(Z_SOLO)
+#    define z_off64_t __int64
+#  else
+#    define z_off64_t z_off_t
+#  endif
 #endif
 
 /* MVS linker does not support external names larger than 8 bytes */
diff --git a/Modules/zlib/zconf.h.in b/Modules/zlib/zconf.h.in
--- a/Modules/zlib/zconf.h.in
+++ b/Modules/zlib/zconf.h.in
@@ -1,5 +1,5 @@
 /* zconf.h -- configuration of the zlib compression library
- * Copyright (C) 1995-2010 Jean-loup Gailly.
+ * Copyright (C) 1995-2013 Jean-loup Gailly.
  * For conditions of distribution and use, see copyright notice in zlib.h
  */
 
@@ -15,11 +15,13 @@
  * this permanently in zconf.h using "./configure --zprefix".
  */
 #ifdef Z_PREFIX     /* may be set to #if 1 by ./configure */
+#  define Z_PREFIX_SET
 
 /* all linked symbols */
 #  define _dist_code            z__dist_code
 #  define _length_code          z__length_code
 #  define _tr_align             z__tr_align
+#  define _tr_flush_bits        z__tr_flush_bits
 #  define _tr_flush_block       z__tr_flush_block
 #  define _tr_init              z__tr_init
 #  define _tr_stored_block      z__tr_stored_block
@@ -27,9 +29,11 @@
 #  define adler32               z_adler32
 #  define adler32_combine       z_adler32_combine
 #  define adler32_combine64     z_adler32_combine64
-#  define compress              z_compress
-#  define compress2             z_compress2
-#  define compressBound         z_compressBound
+#  ifndef Z_SOLO
+#    define compress              z_compress
+#    define compress2             z_compress2
+#    define compressBound         z_compressBound
+#  endif
 #  define crc32                 z_crc32
 #  define crc32_combine         z_crc32_combine
 #  define crc32_combine64       z_crc32_combine64
@@ -40,44 +44,53 @@
 #  define deflateInit2_         z_deflateInit2_
 #  define deflateInit_          z_deflateInit_
 #  define deflateParams         z_deflateParams
+#  define deflatePending        z_deflatePending
 #  define deflatePrime          z_deflatePrime
 #  define deflateReset          z_deflateReset
+#  define deflateResetKeep      z_deflateResetKeep
 #  define deflateSetDictionary  z_deflateSetDictionary
 #  define deflateSetHeader      z_deflateSetHeader
 #  define deflateTune           z_deflateTune
 #  define deflate_copyright     z_deflate_copyright
 #  define get_crc_table         z_get_crc_table
-#  define gz_error              z_gz_error
-#  define gz_intmax             z_gz_intmax
-#  define gz_strwinerror        z_gz_strwinerror
-#  define gzbuffer              z_gzbuffer
-#  define gzclearerr            z_gzclearerr
-#  define gzclose               z_gzclose
-#  define gzclose_r             z_gzclose_r
-#  define gzclose_w             z_gzclose_w
-#  define gzdirect              z_gzdirect
-#  define gzdopen               z_gzdopen
-#  define gzeof                 z_gzeof
-#  define gzerror               z_gzerror
-#  define gzflush               z_gzflush
-#  define gzgetc                z_gzgetc
-#  define gzgets                z_gzgets
-#  define gzoffset              z_gzoffset
-#  define gzoffset64            z_gzoffset64
-#  define gzopen                z_gzopen
-#  define gzopen64              z_gzopen64
-#  define gzprintf              z_gzprintf
-#  define gzputc                z_gzputc
-#  define gzputs                z_gzputs
-#  define gzread                z_gzread
-#  define gzrewind              z_gzrewind
-#  define gzseek                z_gzseek
-#  define gzseek64              z_gzseek64
-#  define gzsetparams           z_gzsetparams
-#  define gztell                z_gztell
-#  define gztell64              z_gztell64
-#  define gzungetc              z_gzungetc
-#  define gzwrite               z_gzwrite
+#  ifndef Z_SOLO
+#    define gz_error              z_gz_error
+#    define gz_intmax             z_gz_intmax
+#    define gz_strwinerror        z_gz_strwinerror
+#    define gzbuffer              z_gzbuffer
+#    define gzclearerr            z_gzclearerr
+#    define gzclose               z_gzclose
+#    define gzclose_r             z_gzclose_r
+#    define gzclose_w             z_gzclose_w
+#    define gzdirect              z_gzdirect
+#    define gzdopen               z_gzdopen
+#    define gzeof                 z_gzeof
+#    define gzerror               z_gzerror
+#    define gzflush               z_gzflush
+#    define gzgetc                z_gzgetc
+#    define gzgetc_               z_gzgetc_
+#    define gzgets                z_gzgets
+#    define gzoffset              z_gzoffset
+#    define gzoffset64            z_gzoffset64
+#    define gzopen                z_gzopen
+#    define gzopen64              z_gzopen64
+#    ifdef _WIN32
+#      define gzopen_w              z_gzopen_w
+#    endif
+#    define gzprintf              z_gzprintf
+#    define gzvprintf             z_gzvprintf
+#    define gzputc                z_gzputc
+#    define gzputs                z_gzputs
+#    define gzread                z_gzread
+#    define gzrewind              z_gzrewind
+#    define gzseek                z_gzseek
+#    define gzseek64              z_gzseek64
+#    define gzsetparams           z_gzsetparams
+#    define gztell                z_gztell
+#    define gztell64              z_gztell64
+#    define gzungetc              z_gzungetc
+#    define gzwrite               z_gzwrite
+#  endif
 #  define inflate               z_inflate
 #  define inflateBack           z_inflateBack
 #  define inflateBackEnd        z_inflateBackEnd
@@ -92,16 +105,22 @@
 #  define inflateReset          z_inflateReset
 #  define inflateReset2         z_inflateReset2
 #  define inflateSetDictionary  z_inflateSetDictionary
+#  define inflateGetDictionary  z_inflateGetDictionary
 #  define inflateSync           z_inflateSync
 #  define inflateSyncPoint      z_inflateSyncPoint
 #  define inflateUndermine      z_inflateUndermine
+#  define inflateResetKeep      z_inflateResetKeep
 #  define inflate_copyright     z_inflate_copyright
 #  define inflate_fast          z_inflate_fast
 #  define inflate_table         z_inflate_table
-#  define uncompress            z_uncompress
+#  ifndef Z_SOLO
+#    define uncompress            z_uncompress
+#  endif
 #  define zError                z_zError
-#  define zcalloc               z_zcalloc
-#  define zcfree                z_zcfree
+#  ifndef Z_SOLO
+#    define zcalloc               z_zcalloc
+#    define zcfree                z_zcfree
+#  endif
 #  define zlibCompileFlags      z_zlibCompileFlags
 #  define zlibVersion           z_zlibVersion
 
@@ -111,7 +130,9 @@
 #  define alloc_func            z_alloc_func
 #  define charf                 z_charf
 #  define free_func             z_free_func
-#  define gzFile                z_gzFile
+#  ifndef Z_SOLO
+#    define gzFile                z_gzFile
+#  endif
 #  define gz_header             z_gz_header
 #  define gz_headerp            z_gz_headerp
 #  define in_func               z_in_func
@@ -197,6 +218,12 @@
 #  endif
 #endif
 
+#if defined(ZLIB_CONST) && !defined(z_const)
+#  define z_const const
+#else
+#  define z_const
+#endif
+
 /* Some Mac compilers merge all .h files incorrectly: */
 #if defined(__MWERKS__)||defined(applec)||defined(THINK_C)||defined(__SC__)
 #  define NO_DUMMY_DECL
@@ -243,6 +270,14 @@
 #  endif
 #endif
 
+#ifndef Z_ARG /* function prototypes for stdarg */
+#  if defined(STDC) || defined(Z_HAVE_STDARG_H)
+#    define Z_ARG(args)  args
+#  else
+#    define Z_ARG(args)  ()
+#  endif
+#endif
+
 /* The following definitions for FAR are needed only for MSDOS mixed
  * model programming (small or medium model with some far allocations).
  * This was tested only with MSC; for other MSDOS compilers you may have
@@ -356,12 +391,47 @@
    typedef Byte       *voidp;
 #endif
 
+#if !defined(Z_U4) && !defined(Z_SOLO) && defined(STDC)
+#  include <limits.h>
+#  if (UINT_MAX == 0xffffffffUL)
+#    define Z_U4 unsigned
+#  elif (ULONG_MAX == 0xffffffffUL)
+#    define Z_U4 unsigned long
+#  elif (USHRT_MAX == 0xffffffffUL)
+#    define Z_U4 unsigned short
+#  endif
+#endif
+
+#ifdef Z_U4
+   typedef Z_U4 z_crc_t;
+#else
+   typedef unsigned long z_crc_t;
+#endif
+
 #ifdef HAVE_UNISTD_H    /* may be set to #if 1 by ./configure */
 #  define Z_HAVE_UNISTD_H
 #endif
 
+#ifdef HAVE_STDARG_H    /* may be set to #if 1 by ./configure */
+#  define Z_HAVE_STDARG_H
+#endif
+
 #ifdef STDC
-#  include <sys/types.h>    /* for off_t */
+#  ifndef Z_SOLO
+#    include <sys/types.h>      /* for off_t */
+#  endif
+#endif
+
+#if defined(STDC) || defined(Z_HAVE_STDARG_H)
+#  ifndef Z_SOLO
+#    include <stdarg.h>         /* for va_list */
+#  endif
+#endif
+
+#ifdef _WIN32
+#  ifndef Z_SOLO
+#    include <stddef.h>         /* for wchar_t */
+#  endif
 #endif
 
 /* a little trick to accommodate both "#define _LARGEFILE64_SOURCE" and
@@ -370,21 +440,38 @@
  * both "#undef _LARGEFILE64_SOURCE" and "#define _LARGEFILE64_SOURCE 0" as
  * equivalently requesting no 64-bit operations
  */
-#if -_LARGEFILE64_SOURCE - -1 == 1
+#if defined(_LARGEFILE64_SOURCE) && -_LARGEFILE64_SOURCE - -1 == 1
 #  undef _LARGEFILE64_SOURCE
 #endif
 
-#if defined(Z_HAVE_UNISTD_H) || defined(_LARGEFILE64_SOURCE)
-#  include <unistd.h>       /* for SEEK_* and off_t */
-#  ifdef VMS
-#    include <unixio.h>     /* for off_t */
-#  endif
-#  ifndef z_off_t
-#    define z_off_t off_t
+#if defined(__WATCOMC__) && !defined(Z_HAVE_UNISTD_H)
+#  define Z_HAVE_UNISTD_H
+#endif
+#ifndef Z_SOLO
+#  if defined(Z_HAVE_UNISTD_H) || defined(_LARGEFILE64_SOURCE)
+#    include <unistd.h>         /* for SEEK_*, off_t, and _LFS64_LARGEFILE */
+#    ifdef VMS
+#      include <unixio.h>       /* for off_t */
+#    endif
+#    ifndef z_off_t
+#      define z_off_t off_t
+#    endif
 #  endif
 #endif
 
-#ifndef SEEK_SET
+#if defined(_LFS64_LARGEFILE) && _LFS64_LARGEFILE-0
+#  define Z_LFS64
+#endif
+
+#if defined(_LARGEFILE64_SOURCE) && defined(Z_LFS64)
+#  define Z_LARGE64
+#endif
+
+#if defined(_FILE_OFFSET_BITS) && _FILE_OFFSET_BITS-0 == 64 && defined(Z_LFS64)
+#  define Z_WANT64
+#endif
+
+#if !defined(SEEK_SET) && !defined(Z_SOLO)
 #  define SEEK_SET        0       /* Seek from beginning of file.  */
 #  define SEEK_CUR        1       /* Seek from current position.  */
 #  define SEEK_END        2       /* Set file pointer to EOF plus "offset" */
@@ -394,18 +481,14 @@
 #  define z_off_t long
 #endif
 
-#if defined(_LARGEFILE64_SOURCE) && _LFS64_LARGEFILE-0
+#if !defined(_WIN32) && defined(Z_LARGE64)
 #  define z_off64_t off64_t
 #else
-#  define z_off64_t z_off_t
-#endif
-
-#if defined(__OS400__)
-#  define NO_vsnprintf
-#endif
-
-#if defined(__MVS__)
-#  define NO_vsnprintf
+#  if defined(_WIN32) && !defined(__GNUC__) && !defined(Z_SOLO)
+#    define z_off64_t __int64
+#  else
+#    define z_off64_t z_off_t
+#  endif
 #endif
 
 /* MVS linker does not support external names larger than 8 bytes */
diff --git a/Modules/zlib/zconf.in.h b/Modules/zlib/zconf.in.h
deleted file mode 100644
--- a/Modules/zlib/zconf.in.h
+++ /dev/null
@@ -1,332 +0,0 @@
-/* zconf.h -- configuration of the zlib compression library
- * Copyright (C) 1995-2005 Jean-loup Gailly.
- * For conditions of distribution and use, see copyright notice in zlib.h
- */
-
-/* @(#) $Id$ */
-
-#ifndef ZCONF_H
-#define ZCONF_H
-
-/*
- * If you *really* need a unique prefix for all types and library functions,
- * compile with -DZ_PREFIX. The "standard" zlib should be compiled without it.
- */
-#ifdef Z_PREFIX
-#  define deflateInit_          z_deflateInit_
-#  define deflate               z_deflate
-#  define deflateEnd            z_deflateEnd
-#  define inflateInit_          z_inflateInit_
-#  define inflate               z_inflate
-#  define inflateEnd            z_inflateEnd
-#  define deflateInit2_         z_deflateInit2_
-#  define deflateSetDictionary  z_deflateSetDictionary
-#  define deflateCopy           z_deflateCopy
-#  define deflateReset          z_deflateReset
-#  define deflateParams         z_deflateParams
-#  define deflateBound          z_deflateBound
-#  define deflatePrime          z_deflatePrime
-#  define inflateInit2_         z_inflateInit2_
-#  define inflateSetDictionary  z_inflateSetDictionary
-#  define inflateSync           z_inflateSync
-#  define inflateSyncPoint      z_inflateSyncPoint
-#  define inflateCopy           z_inflateCopy
-#  define inflateReset          z_inflateReset
-#  define inflateBack           z_inflateBack
-#  define inflateBackEnd        z_inflateBackEnd
-#  define compress              z_compress
-#  define compress2             z_compress2
-#  define compressBound         z_compressBound
-#  define uncompress            z_uncompress
-#  define adler32               z_adler32
-#  define crc32                 z_crc32
-#  define get_crc_table         z_get_crc_table
-#  define zError                z_zError
-
-#  define alloc_func            z_alloc_func
-#  define free_func             z_free_func
-#  define in_func               z_in_func
-#  define out_func              z_out_func
-#  define Byte                  z_Byte
-#  define uInt                  z_uInt
-#  define uLong                 z_uLong
-#  define Bytef                 z_Bytef
-#  define charf                 z_charf
-#  define intf                  z_intf
-#  define uIntf                 z_uIntf
-#  define uLongf                z_uLongf
-#  define voidpf                z_voidpf
-#  define voidp                 z_voidp
-#endif
-
-#if defined(__MSDOS__) && !defined(MSDOS)
-#  define MSDOS
-#endif
-#if (defined(OS_2) || defined(__OS2__)) && !defined(OS2)
-#  define OS2
-#endif
-#if defined(_WINDOWS) && !defined(WINDOWS)
-#  define WINDOWS
-#endif
-#if defined(_WIN32) || defined(_WIN32_WCE) || defined(__WIN32__)
-#  ifndef WIN32
-#    define WIN32
-#  endif
-#endif
-#if (defined(MSDOS) || defined(OS2) || defined(WINDOWS)) && !defined(WIN32)
-#  if !defined(__GNUC__) && !defined(__FLAT__) && !defined(__386__)
-#    ifndef SYS16BIT
-#      define SYS16BIT
-#    endif
-#  endif
-#endif
-
-/*
- * Compile with -DMAXSEG_64K if the alloc function cannot allocate more
- * than 64k bytes at a time (needed on systems with 16-bit int).
- */
-#ifdef SYS16BIT
-#  define MAXSEG_64K
-#endif
-#ifdef MSDOS
-#  define UNALIGNED_OK
-#endif
-
-#ifdef __STDC_VERSION__
-#  ifndef STDC
-#    define STDC
-#  endif
-#  if __STDC_VERSION__ >= 199901L
-#    ifndef STDC99
-#      define STDC99
-#    endif
-#  endif
-#endif
-#if !defined(STDC) && (defined(__STDC__) || defined(__cplusplus))
-#  define STDC
-#endif
-#if !defined(STDC) && (defined(__GNUC__) || defined(__BORLANDC__))
-#  define STDC
-#endif
-#if !defined(STDC) && (defined(MSDOS) || defined(WINDOWS) || defined(WIN32))
-#  define STDC
-#endif
-#if !defined(STDC) && (defined(OS2) || defined(__HOS_AIX__))
-#  define STDC
-#endif
-
-#if defined(__OS400__) && !defined(STDC)    /* iSeries (formerly AS/400). */
-#  define STDC
-#endif
-
-#ifndef STDC
-#  ifndef const /* cannot use !defined(STDC) && !defined(const) on Mac */
-#    define const       /* note: need a more gentle solution here */
-#  endif
-#endif
-
-/* Some Mac compilers merge all .h files incorrectly: */
-#if defined(__MWERKS__)||defined(applec)||defined(THINK_C)||defined(__SC__)
-#  define NO_DUMMY_DECL
-#endif
-
-/* Maximum value for memLevel in deflateInit2 */
-#ifndef MAX_MEM_LEVEL
-#  ifdef MAXSEG_64K
-#    define MAX_MEM_LEVEL 8
-#  else
-#    define MAX_MEM_LEVEL 9
-#  endif
-#endif
-
-/* Maximum value for windowBits in deflateInit2 and inflateInit2.
- * WARNING: reducing MAX_WBITS makes minigzip unable to extract .gz files
- * created by gzip. (Files created by minigzip can still be extracted by
- * gzip.)
- */
-#ifndef MAX_WBITS
-#  define MAX_WBITS   15 /* 32K LZ77 window */
-#endif
-
-/* The memory requirements for deflate are (in bytes):
-            (1 << (windowBits+2)) +  (1 << (memLevel+9))
- that is: 128K for windowBits=15  +  128K for memLevel = 8  (default values)
- plus a few kilobytes for small objects. For example, if you want to reduce
- the default memory requirements from 256K to 128K, compile with
-     make CFLAGS="-O -DMAX_WBITS=14 -DMAX_MEM_LEVEL=7"
- Of course this will generally degrade compression (there's no free lunch).
-
-   The memory requirements for inflate are (in bytes) 1 << windowBits
- that is, 32K for windowBits=15 (default value) plus a few kilobytes
- for small objects.
-*/
-
-                        /* Type declarations */
-
-#ifndef OF /* function prototypes */
-#  ifdef STDC
-#    define OF(args)  args
-#  else
-#    define OF(args)  ()
-#  endif
-#endif
-
-/* The following definitions for FAR are needed only for MSDOS mixed
- * model programming (small or medium model with some far allocations).
- * This was tested only with MSC; for other MSDOS compilers you may have
- * to define NO_MEMCPY in zutil.h.  If you don't need the mixed model,
- * just define FAR to be empty.
- */
-#ifdef SYS16BIT
-#  if defined(M_I86SM) || defined(M_I86MM)
-     /* MSC small or medium model */
-#    define SMALL_MEDIUM
-#    ifdef _MSC_VER
-#      define FAR _far
-#    else
-#      define FAR far
-#    endif
-#  endif
-#  if (defined(__SMALL__) || defined(__MEDIUM__))
-     /* Turbo C small or medium model */
-#    define SMALL_MEDIUM
-#    ifdef __BORLANDC__
-#      define FAR _far
-#    else
-#      define FAR far
-#    endif
-#  endif
-#endif
-
-#if defined(WINDOWS) || defined(WIN32)
-   /* If building or using zlib as a DLL, define ZLIB_DLL.
-    * This is not mandatory, but it offers a little performance increase.
-    */
-#  ifdef ZLIB_DLL
-#    if defined(WIN32) && (!defined(__BORLANDC__) || (__BORLANDC__ >= 0x500))
-#      ifdef ZLIB_INTERNAL
-#        define ZEXTERN extern __declspec(dllexport)
-#      else
-#        define ZEXTERN extern __declspec(dllimport)
-#      endif
-#    endif
-#  endif  /* ZLIB_DLL */
-   /* If building or using zlib with the WINAPI/WINAPIV calling convention,
-    * define ZLIB_WINAPI.
-    * Caution: the standard ZLIB1.DLL is NOT compiled using ZLIB_WINAPI.
-    */
-#  ifdef ZLIB_WINAPI
-#    ifdef FAR
-#      undef FAR
-#    endif
-#    include <windows.h>
-     /* No need for _export, use ZLIB.DEF instead. */
-     /* For complete Windows compatibility, use WINAPI, not __stdcall. */
-#    define ZEXPORT WINAPI
-#    ifdef WIN32
-#      define ZEXPORTVA WINAPIV
-#    else
-#      define ZEXPORTVA FAR CDECL
-#    endif
-#  endif
-#endif
-
-#if defined (__BEOS__)
-#  ifdef ZLIB_DLL
-#    ifdef ZLIB_INTERNAL
-#      define ZEXPORT   __declspec(dllexport)
-#      define ZEXPORTVA __declspec(dllexport)
-#    else
-#      define ZEXPORT   __declspec(dllimport)
-#      define ZEXPORTVA __declspec(dllimport)
-#    endif
-#  endif
-#endif
-
-#ifndef ZEXTERN
-#  define ZEXTERN extern
-#endif
-#ifndef ZEXPORT
-#  define ZEXPORT
-#endif
-#ifndef ZEXPORTVA
-#  define ZEXPORTVA
-#endif
-
-#ifndef FAR
-#  define FAR
-#endif
-
-#if !defined(__MACTYPES__)
-typedef unsigned char  Byte;  /* 8 bits */
-#endif
-typedef unsigned int   uInt;  /* 16 bits or more */
-typedef unsigned long  uLong; /* 32 bits or more */
-
-#ifdef SMALL_MEDIUM
-   /* Borland C/C++ and some old MSC versions ignore FAR inside typedef */
-#  define Bytef Byte FAR
-#else
-   typedef Byte  FAR Bytef;
-#endif
-typedef char  FAR charf;
-typedef int   FAR intf;
-typedef uInt  FAR uIntf;
-typedef uLong FAR uLongf;
-
-#ifdef STDC
-   typedef void const *voidpc;
-   typedef void FAR   *voidpf;
-   typedef void       *voidp;
-#else
-   typedef Byte const *voidpc;
-   typedef Byte FAR   *voidpf;
-   typedef Byte       *voidp;
-#endif
-
-#if 0           /* HAVE_UNISTD_H -- this line is updated by ./configure */
-#  include <sys/types.h> /* for off_t */
-#  include <unistd.h>    /* for SEEK_* and off_t */
-#  ifdef VMS
-#    include <unixio.h>   /* for off_t */
-#  endif
-#  define z_off_t off_t
-#endif
-#ifndef SEEK_SET
-#  define SEEK_SET        0       /* Seek from beginning of file.  */
-#  define SEEK_CUR        1       /* Seek from current position.  */
-#  define SEEK_END        2       /* Set file pointer to EOF plus "offset" */
-#endif
-#ifndef z_off_t
-#  define z_off_t long
-#endif
-
-#if defined(__OS400__)
-#  define NO_vsnprintf
-#endif
-
-#if defined(__MVS__)
-#  define NO_vsnprintf
-#  ifdef FAR
-#    undef FAR
-#  endif
-#endif
-
-/* MVS linker does not support external names larger than 8 bytes */
-#if defined(__MVS__)
-#   pragma map(deflateInit_,"DEIN")
-#   pragma map(deflateInit2_,"DEIN2")
-#   pragma map(deflateEnd,"DEEND")
-#   pragma map(deflateBound,"DEBND")
-#   pragma map(inflateInit_,"ININ")
-#   pragma map(inflateInit2_,"ININ2")
-#   pragma map(inflateEnd,"INEND")
-#   pragma map(inflateSync,"INSY")
-#   pragma map(inflateSetDictionary,"INSEDI")
-#   pragma map(compressBound,"CMBND")
-#   pragma map(inflate_table,"INTABL")
-#   pragma map(inflate_fast,"INFA")
-#   pragma map(inflate_copyright,"INCOPY")
-#endif
-
-#endif /* ZCONF_H */
diff --git a/Modules/zlib/zlib.3 b/Modules/zlib/zlib.3
--- a/Modules/zlib/zlib.3
+++ b/Modules/zlib/zlib.3
@@ -1,4 +1,4 @@
-.TH ZLIB 3 "19 Apr 2010"
+.TH ZLIB 3 "28 Apr 2013"
 .SH NAME
 zlib \- compression/decompression library
 .SH SYNOPSIS
@@ -36,9 +36,9 @@
 .IR zlib.h .
 The distribution source includes examples of use of the library
 in the files
-.I example.c
+.I test/example.c
 and
-.IR minigzip.c,
+.IR test/minigzip.c,
 as well as other examples in the
 .IR examples/
 directory.
@@ -65,7 +65,7 @@
 written by A.M. Kuchling (amk at magnet.com),
 is available in Python 1.5 and later versions:
 .IP
-http://www.python.org/doc/lib/module-zlib.html
+http://docs.python.org/library/zlib.html
 .LP
 .I zlib
 is built into
@@ -95,11 +95,11 @@
 The data format used by the zlib library is described by RFC
 (Request for Comments) 1950 to 1952 in the files:
 .IP
-http://www.ietf.org/rfc/rfc1950.txt (for the zlib header and trailer format)
+http://tools.ietf.org/html/rfc1950 (for the zlib header and trailer format)
 .br
-http://www.ietf.org/rfc/rfc1951.txt (for the deflate compressed data format)
+http://tools.ietf.org/html/rfc1951 (for the deflate compressed data format)
 .br
-http://www.ietf.org/rfc/rfc1952.txt (for the gzip header and trailer format)
+http://tools.ietf.org/html/rfc1952 (for the gzip header and trailer format)
 .LP
 Mark Nelson wrote an article about
 .I zlib
@@ -125,8 +125,8 @@
 Send questions and/or comments to zlib at gzip.org,
 or (for the Windows DLL version) to Gilles Vollant (info at winimage.com).
 .SH AUTHORS
-Version 1.2.5
-Copyright (C) 1995-2010 Jean-loup Gailly (jloup at gzip.org)
+Version 1.2.8
+Copyright (C) 1995-2013 Jean-loup Gailly (jloup at gzip.org)
 and Mark Adler (madler at alumni.caltech.edu).
 .LP
 This software is provided "as-is,"
diff --git a/Modules/zlib/zlib.h b/Modules/zlib/zlib.h
--- a/Modules/zlib/zlib.h
+++ b/Modules/zlib/zlib.h
@@ -1,7 +1,7 @@
 /* zlib.h -- interface of the 'zlib' general purpose compression library
-  version 1.2.5, April 19th, 2010
+  version 1.2.8, April 28th, 2013
 
-  Copyright (C) 1995-2010 Jean-loup Gailly and Mark Adler
+  Copyright (C) 1995-2013 Jean-loup Gailly and Mark Adler
 
   This software is provided 'as-is', without any express or implied
   warranty.  In no event will the authors be held liable for any damages
@@ -24,8 +24,8 @@
 
 
   The data format used by the zlib library is described by RFCs (Request for
-  Comments) 1950 to 1952 in the files http://www.ietf.org/rfc/rfc1950.txt
-  (zlib format), rfc1951.txt (deflate format) and rfc1952.txt (gzip format).
+  Comments) 1950 to 1952 in the files http://tools.ietf.org/html/rfc1950
+  (zlib format), rfc1951 (deflate format) and rfc1952 (gzip format).
 */
 
 #ifndef ZLIB_H
@@ -37,11 +37,11 @@
 extern "C" {
 #endif
 
-#define ZLIB_VERSION "1.2.5"
-#define ZLIB_VERNUM 0x1250
+#define ZLIB_VERSION "1.2.8"
+#define ZLIB_VERNUM 0x1280
 #define ZLIB_VER_MAJOR 1
 #define ZLIB_VER_MINOR 2
-#define ZLIB_VER_REVISION 5
+#define ZLIB_VER_REVISION 8
 #define ZLIB_VER_SUBREVISION 0
 
 /*
@@ -83,15 +83,15 @@
 struct internal_state;
 
 typedef struct z_stream_s {
-    Bytef    *next_in;  /* next input byte */
+    z_const Bytef *next_in;     /* next input byte */
     uInt     avail_in;  /* number of bytes available at next_in */
-    uLong    total_in;  /* total nb of input bytes read so far */
+    uLong    total_in;  /* total number of input bytes read so far */
 
     Bytef    *next_out; /* next output byte should be put there */
     uInt     avail_out; /* remaining free space at next_out */
-    uLong    total_out; /* total nb of bytes output so far */
+    uLong    total_out; /* total number of bytes output so far */
 
-    char     *msg;      /* last error message, NULL if no error */
+    z_const char *msg;  /* last error message, NULL if no error */
     struct internal_state FAR *state; /* not visible by applications */
 
     alloc_func zalloc;  /* used to allocate the internal state */
@@ -327,8 +327,9 @@
 
     Z_FINISH can be used immediately after deflateInit if all the compression
   is to be done in a single step.  In this case, avail_out must be at least the
-  value returned by deflateBound (see below).  If deflate does not return
-  Z_STREAM_END, then it must be called again as described above.
+  value returned by deflateBound (see below).  Then deflate is guaranteed to
+  return Z_STREAM_END.  If not enough output space is provided, deflate will
+  not return Z_STREAM_END, and it must be called again as described above.
 
     deflate() sets strm->adler to the adler32 checksum of all input read
   so far (that is, total_in bytes).
@@ -451,23 +452,29 @@
   error.  However if all decompression is to be performed in a single step (a
   single call of inflate), the parameter flush should be set to Z_FINISH.  In
   this case all pending input is processed and all pending output is flushed;
-  avail_out must be large enough to hold all the uncompressed data.  (The size
-  of the uncompressed data may have been saved by the compressor for this
-  purpose.) The next operation on this stream must be inflateEnd to deallocate
-  the decompression state.  The use of Z_FINISH is never required, but can be
-  used to inform inflate that a faster approach may be used for the single
-  inflate() call.
+  avail_out must be large enough to hold all of the uncompressed data for the
+  operation to complete.  (The size of the uncompressed data may have been
+  saved by the compressor for this purpose.) The use of Z_FINISH is not
+  required to perform an inflation in one step.  However it may be used to
+  inform inflate that a faster approach can be used for the single inflate()
+  call.  Z_FINISH also informs inflate to not maintain a sliding window if the
+  stream completes, which reduces inflate's memory footprint.  If the stream
+  does not complete, either because not all of the stream is provided or not
+  enough output space is provided, then a sliding window will be allocated and
+  inflate() can be called again to continue the operation as if Z_NO_FLUSH had
+  been used.
 
      In this implementation, inflate() always flushes as much output as
   possible to the output buffer, and always uses the faster approach on the
-  first call.  So the only effect of the flush parameter in this implementation
-  is on the return value of inflate(), as noted below, or when it returns early
-  because Z_BLOCK or Z_TREES is used.
+  first call.  So the effects of the flush parameter in this implementation are
+  on the return value of inflate() as noted below, when inflate() returns early
+  when Z_BLOCK or Z_TREES is used, and when inflate() avoids the allocation of
+  memory for a sliding window when Z_FINISH is used.
 
      If a preset dictionary is needed after this call (see inflateSetDictionary
-  below), inflate sets strm->adler to the adler32 checksum of the dictionary
+  below), inflate sets strm->adler to the Adler-32 checksum of the dictionary
   chosen by the compressor and returns Z_NEED_DICT; otherwise it sets
-  strm->adler to the adler32 checksum of all output produced so far (that is,
+  strm->adler to the Adler-32 checksum of all output produced so far (that is,
   total_out bytes) and returns Z_OK, Z_STREAM_END or an error code as described
   below.  At the end of the stream, inflate() checks that its computed adler32
   checksum is equal to that saved by the compressor and returns Z_STREAM_END
@@ -478,7 +485,9 @@
   initializing with inflateInit2().  Any information contained in the gzip
   header is not retained, so applications that need that information should
   instead use raw inflate, see inflateInit2() below, or inflateBack() and
-  perform their own processing of the gzip header and trailer.
+  perform their own processing of the gzip header and trailer.  When processing
+  gzip-wrapped deflate data, strm->adler32 is set to the CRC-32 of the output
+  producted so far.  The CRC-32 is checked against the gzip trailer.
 
     inflate() returns Z_OK if some progress has been made (more input processed
   or more output produced), Z_STREAM_END if the end of the compressed data has
@@ -580,10 +589,15 @@
                                              uInt  dictLength));
 /*
      Initializes the compression dictionary from the given byte sequence
-   without producing any compressed output.  This function must be called
-   immediately after deflateInit, deflateInit2 or deflateReset, before any call
-   of deflate.  The compressor and decompressor must use exactly the same
-   dictionary (see inflateSetDictionary).
+   without producing any compressed output.  When using the zlib format, this
+   function must be called immediately after deflateInit, deflateInit2 or
+   deflateReset, and before any call of deflate.  When doing raw deflate, this
+   function must be called either before any call of deflate, or immediately
+   after the completion of a deflate block, i.e. after all input has been
+   consumed and all output has been delivered when using any of the flush
+   options Z_BLOCK, Z_PARTIAL_FLUSH, Z_SYNC_FLUSH, or Z_FULL_FLUSH.  The
+   compressor and decompressor must use exactly the same dictionary (see
+   inflateSetDictionary).
 
      The dictionary should consist of strings (byte sequences) that are likely
    to be encountered later in the data to be compressed, with the most commonly
@@ -610,8 +624,8 @@
      deflateSetDictionary returns Z_OK if success, or Z_STREAM_ERROR if a
    parameter is invalid (e.g.  dictionary being Z_NULL) or the stream state is
    inconsistent (for example if deflate has already been called for this stream
-   or if the compression method is bsort).  deflateSetDictionary does not
-   perform any compression: this will be done by deflate().
+   or if not at a block boundary for raw deflate).  deflateSetDictionary does
+   not perform any compression: this will be done by deflate().
 */
 
 ZEXTERN int ZEXPORT deflateCopy OF((z_streamp dest,
@@ -688,9 +702,29 @@
    deflation of sourceLen bytes.  It must be called after deflateInit() or
    deflateInit2(), and after deflateSetHeader(), if used.  This would be used
    to allocate an output buffer for deflation in a single pass, and so would be
-   called before deflate().
+   called before deflate().  If that first deflate() call is provided the
+   sourceLen input bytes, an output buffer allocated to the size returned by
+   deflateBound(), and the flush value Z_FINISH, then deflate() is guaranteed
+   to return Z_STREAM_END.  Note that it is possible for the compressed size to
+   be larger than the value returned by deflateBound() if flush options other
+   than Z_FINISH or Z_NO_FLUSH are used.
 */
 
+ZEXTERN int ZEXPORT deflatePending OF((z_streamp strm,
+                                       unsigned *pending,
+                                       int *bits));
+/*
+     deflatePending() returns the number of bytes and bits of output that have
+   been generated, but not yet provided in the available output.  The bytes not
+   provided would be due to the available output space having being consumed.
+   The number of bits of output not provided are between 0 and 7, where they
+   await more bits to join them in order to fill out a full byte.  If pending
+   or bits are Z_NULL, then those values are not set.
+
+     deflatePending returns Z_OK if success, or Z_STREAM_ERROR if the source
+   stream state was inconsistent.
+ */
+
 ZEXTERN int ZEXPORT deflatePrime OF((z_streamp strm,
                                      int bits,
                                      int value));
@@ -703,8 +737,9 @@
    than or equal to 16, and that many of the least significant bits of value
    will be inserted in the output.
 
-     deflatePrime returns Z_OK if success, or Z_STREAM_ERROR if the source
-   stream state was inconsistent.
+     deflatePrime returns Z_OK if success, Z_BUF_ERROR if there was not enough
+   room in the internal buffer to insert the bits, or Z_STREAM_ERROR if the
+   source stream state was inconsistent.
 */
 
 ZEXTERN int ZEXPORT deflateSetHeader OF((z_streamp strm,
@@ -790,10 +825,11 @@
    if that call returned Z_NEED_DICT.  The dictionary chosen by the compressor
    can be determined from the adler32 value returned by that call of inflate.
    The compressor and decompressor must use exactly the same dictionary (see
-   deflateSetDictionary).  For raw inflate, this function can be called
-   immediately after inflateInit2() or inflateReset() and before any call of
-   inflate() to set the dictionary.  The application must insure that the
-   dictionary that was used for compression is provided.
+   deflateSetDictionary).  For raw inflate, this function can be called at any
+   time to set the dictionary.  If the provided dictionary is smaller than the
+   window and there is already data in the window, then the provided dictionary
+   will amend what's there.  The application must insure that the dictionary
+   that was used for compression is provided.
 
      inflateSetDictionary returns Z_OK if success, Z_STREAM_ERROR if a
    parameter is invalid (e.g.  dictionary being Z_NULL) or the stream state is
@@ -803,19 +839,38 @@
    inflate().
 */
 
+ZEXTERN int ZEXPORT inflateGetDictionary OF((z_streamp strm,
+                                             Bytef *dictionary,
+                                             uInt  *dictLength));
+/*
+     Returns the sliding dictionary being maintained by inflate.  dictLength is
+   set to the number of bytes in the dictionary, and that many bytes are copied
+   to dictionary.  dictionary must have enough space, where 32768 bytes is
+   always enough.  If inflateGetDictionary() is called with dictionary equal to
+   Z_NULL, then only the dictionary length is returned, and nothing is copied.
+   Similary, if dictLength is Z_NULL, then it is not set.
+
+     inflateGetDictionary returns Z_OK on success, or Z_STREAM_ERROR if the
+   stream state is inconsistent.
+*/
+
 ZEXTERN int ZEXPORT inflateSync OF((z_streamp strm));
 /*
-     Skips invalid compressed data until a full flush point (see above the
-   description of deflate with Z_FULL_FLUSH) can be found, or until all
+     Skips invalid compressed data until a possible full flush point (see above
+   for the description of deflate with Z_FULL_FLUSH) can be found, or until all
    available input is skipped.  No output is provided.
 
-     inflateSync returns Z_OK if a full flush point has been found, Z_BUF_ERROR
-   if no more input was provided, Z_DATA_ERROR if no flush point has been
-   found, or Z_STREAM_ERROR if the stream structure was inconsistent.  In the
-   success case, the application may save the current value of total_in
-   which indicates where valid compressed data was found.  In the error case,
-   the application may repeatedly call inflateSync, providing more input each
-   time, until success or end of the input data.
+     inflateSync searches for a 00 00 FF FF pattern in the compressed data.
+   All full flush points have this pattern, but not all occurrences of this
+   pattern are full flush points.
+
+     inflateSync returns Z_OK if a possible full flush point has been found,
+   Z_BUF_ERROR if no more input was provided, Z_DATA_ERROR if no flush point
+   has been found, or Z_STREAM_ERROR if the stream structure was inconsistent.
+   In the success case, the application may save the current current value of
+   total_in which indicates where valid compressed data was found.  In the
+   error case, the application may repeatedly call inflateSync, providing more
+   input each time, until success or end of the input data.
 */
 
 ZEXTERN int ZEXPORT inflateCopy OF((z_streamp dest,
@@ -962,12 +1017,13 @@
      See inflateBack() for the usage of these routines.
 
      inflateBackInit will return Z_OK on success, Z_STREAM_ERROR if any of
-   the paramaters are invalid, Z_MEM_ERROR if the internal state could not be
+   the parameters are invalid, Z_MEM_ERROR if the internal state could not be
    allocated, or Z_VERSION_ERROR if the version of the library does not match
    the version of the header file.
 */
 
-typedef unsigned (*in_func) OF((void FAR *, unsigned char FAR * FAR *));
+typedef unsigned (*in_func) OF((void FAR *,
+                                z_const unsigned char FAR * FAR *));
 typedef int (*out_func) OF((void FAR *, unsigned char FAR *, unsigned));
 
 ZEXTERN int ZEXPORT inflateBack OF((z_streamp strm,
@@ -975,11 +1031,12 @@
                                     out_func out, void FAR *out_desc));
 /*
      inflateBack() does a raw inflate with a single call using a call-back
-   interface for input and output.  This is more efficient than inflate() for
-   file i/o applications in that it avoids copying between the output and the
-   sliding window by simply making the window itself the output buffer.  This
-   function trusts the application to not change the output buffer passed by
-   the output function, at least until inflateBack() returns.
+   interface for input and output.  This is potentially more efficient than
+   inflate() for file i/o applications, in that it avoids copying between the
+   output and the sliding window by simply making the window itself the output
+   buffer.  inflate() can be faster on modern CPUs when used with large
+   buffers.  inflateBack() trusts the application to not change the output
+   buffer passed by the output function, at least until inflateBack() returns.
 
      inflateBackInit() must be called first to allocate the internal state
    and to initialize the state with the user-provided window buffer.
@@ -1088,6 +1145,7 @@
      27-31: 0 (reserved)
  */
 
+#ifndef Z_SOLO
 
                         /* utility functions */
 
@@ -1149,10 +1207,11 @@
 
      uncompress returns Z_OK if success, Z_MEM_ERROR if there was not
    enough memory, Z_BUF_ERROR if there was not enough room in the output
-   buffer, or Z_DATA_ERROR if the input data was corrupted or incomplete.
+   buffer, or Z_DATA_ERROR if the input data was corrupted or incomplete.  In
+   the case where there is not enough room, uncompress() will fill the output
+   buffer with the uncompressed data up to that point.
 */
 
-
                         /* gzip file access functions */
 
 /*
@@ -1162,7 +1221,7 @@
    wrapper, documented in RFC 1952, wrapped around a deflate stream.
 */
 
-typedef voidp gzFile;       /* opaque gzip file descriptor */
+typedef struct gzFile_s *gzFile;    /* semi-opaque gzip file descriptor */
 
 /*
 ZEXTERN gzFile ZEXPORT gzopen OF((const char *path, const char *mode));
@@ -1172,13 +1231,28 @@
    a strategy: 'f' for filtered data as in "wb6f", 'h' for Huffman-only
    compression as in "wb1h", 'R' for run-length encoding as in "wb1R", or 'F'
    for fixed code compression as in "wb9F".  (See the description of
-   deflateInit2 for more information about the strategy parameter.) Also "a"
-   can be used instead of "w" to request that the gzip stream that will be
-   written be appended to the file.  "+" will result in an error, since reading
-   and writing to the same gzip file is not supported.
+   deflateInit2 for more information about the strategy parameter.)  'T' will
+   request transparent writing or appending with no compression and not using
+   the gzip format.
+
+     "a" can be used instead of "w" to request that the gzip stream that will
+   be written be appended to the file.  "+" will result in an error, since
+   reading and writing to the same gzip file is not supported.  The addition of
+   "x" when writing will create the file exclusively, which fails if the file
+   already exists.  On systems that support it, the addition of "e" when
+   reading or writing will set the flag to close the file on an execve() call.
+
+     These functions, as well as gzip, will read and decode a sequence of gzip
+   streams in a file.  The append function of gzopen() can be used to create
+   such a file.  (Also see gzflush() for another way to do this.)  When
+   appending, gzopen does not test whether the file begins with a gzip stream,
+   nor does it look for the end of the gzip streams to begin appending.  gzopen
+   will simply append a gzip stream to the existing file.
 
      gzopen can be used to read a file which is not in gzip format; in this
-   case gzread will directly read from the file without decompression.
+   case gzread will directly read from the file without decompression.  When
+   reading, this will be detected automatically by looking for the magic two-
+   byte gzip header.
 
      gzopen returns NULL if the file could not be opened, if there was
    insufficient memory to allocate the gzFile state, or if an invalid mode was
@@ -1197,7 +1271,11 @@
    descriptor fd, just like fclose(fdopen(fd, mode)) closes the file descriptor
    fd.  If you want to keep fd open, use fd = dup(fd_keep); gz = gzdopen(fd,
    mode);.  The duplicated descriptor should be saved to avoid a leak, since
-   gzdopen does not close fd if it fails.
+   gzdopen does not close fd if it fails.  If you are using fileno() to get the
+   file descriptor from a FILE *, then you will have to use dup() to avoid
+   double-close()ing the file descriptor.  Both gzclose() and fclose() will
+   close the associated file descriptor, so they need to have different file
+   descriptors.
 
      gzdopen returns NULL if there was insufficient memory to allocate the
    gzFile state, if an invalid mode was specified (an 'r', 'w', or 'a' was not
@@ -1235,14 +1313,26 @@
 ZEXTERN int ZEXPORT gzread OF((gzFile file, voidp buf, unsigned len));
 /*
      Reads the given number of uncompressed bytes from the compressed file.  If
-   the input file was not in gzip format, gzread copies the given number of
-   bytes into the buffer.
+   the input file is not in gzip format, gzread copies the given number of
+   bytes into the buffer directly from the file.
 
      After reaching the end of a gzip stream in the input, gzread will continue
-   to read, looking for another gzip stream, or failing that, reading the rest
-   of the input file directly without decompression.  The entire input file
-   will be read if gzread is called until it returns less than the requested
-   len.
+   to read, looking for another gzip stream.  Any number of gzip streams may be
+   concatenated in the input file, and will all be decompressed by gzread().
+   If something other than a gzip stream is encountered after a gzip stream,
+   that remaining trailing garbage is ignored (and no error is returned).
+
+     gzread can be used to read a gzip file that is being concurrently written.
+   Upon reaching the end of the input, gzread will return with the available
+   data.  If the error code returned by gzerror is Z_OK or Z_BUF_ERROR, then
+   gzclearerr can be used to clear the end of file indicator in order to permit
+   gzread to be tried again.  Z_OK indicates that a gzip stream was completed
+   on the last gzread.  Z_BUF_ERROR indicates that the input file ended in the
+   middle of a gzip stream.  Note that gzread does not return -1 in the event
+   of an incomplete gzip stream.  This error is deferred until gzclose(), which
+   will return Z_BUF_ERROR if the last gzread ended in the middle of a gzip
+   stream.  Alternatively, gzerror can be used before gzclose to detect this
+   case.
 
      gzread returns the number of uncompressed bytes actually read, less than
    len for end of file, or -1 for error.
@@ -1256,7 +1346,7 @@
    error.
 */
 
-ZEXTERN int ZEXPORTVA gzprintf OF((gzFile file, const char *format, ...));
+ZEXTERN int ZEXPORTVA gzprintf Z_ARG((gzFile file, const char *format, ...));
 /*
      Converts, formats, and writes the arguments to the compressed file under
    control of the format string, as in fprintf.  gzprintf returns the number of
@@ -1301,7 +1391,10 @@
 ZEXTERN int ZEXPORT gzgetc OF((gzFile file));
 /*
      Reads one byte from the compressed file.  gzgetc returns this byte or -1
-   in case of end of file or error.
+   in case of end of file or error.  This is implemented as a macro for speed.
+   As such, it does not do all of the checking the other functions do.  I.e.
+   it does not check to see if file is NULL, nor whether the structure file
+   points to has been clobbered or not.
 */
 
 ZEXTERN int ZEXPORT gzungetc OF((int c, gzFile file));
@@ -1397,9 +1490,7 @@
 ZEXTERN int ZEXPORT gzdirect OF((gzFile file));
 /*
      Returns true (1) if file is being copied directly while reading, or false
-   (0) if file is a gzip stream being decompressed.  This state can change from
-   false to true while reading the input file if the end of a gzip stream is
-   reached, but is followed by data that is not another gzip stream.
+   (0) if file is a gzip stream being decompressed.
 
      If the input file is empty, gzdirect() will return true, since the input
    does not contain a gzip stream.
@@ -1408,6 +1499,13 @@
    cause buffers to be allocated to allow reading the file to determine if it
    is a gzip file.  Therefore if gzbuffer() is used, it should be called before
    gzdirect().
+
+     When writing, gzdirect() returns true (1) if transparent writing was
+   requested ("wT" for the gzopen() mode), or false (0) otherwise.  (Note:
+   gzdirect() is not needed when writing.  Transparent writing must be
+   explicitly requested, so the application already knows the answer.  When
+   linking statically, using gzdirect() will include all of the zlib code for
+   gzip file reading and decompression, which may not be desired.)
 */
 
 ZEXTERN int ZEXPORT    gzclose OF((gzFile file));
@@ -1419,7 +1517,8 @@
    must not be called more than once on the same allocation.
 
      gzclose will return Z_STREAM_ERROR if file is not valid, Z_ERRNO on a
-   file operation error, or Z_OK on success.
+   file operation error, Z_MEM_ERROR if out of memory, Z_BUF_ERROR if the
+   last read ended in the middle of a gzip stream, or Z_OK on success.
 */
 
 ZEXTERN int ZEXPORT gzclose_r OF((gzFile file));
@@ -1457,6 +1556,7 @@
    file that is being written concurrently.
 */
 
+#endif /* !Z_SOLO */
 
                         /* checksum functions */
 
@@ -1492,16 +1592,17 @@
      Combine two Adler-32 checksums into one.  For two sequences of bytes, seq1
    and seq2 with lengths len1 and len2, Adler-32 checksums were calculated for
    each, adler1 and adler2.  adler32_combine() returns the Adler-32 checksum of
-   seq1 and seq2 concatenated, requiring only adler1, adler2, and len2.
+   seq1 and seq2 concatenated, requiring only adler1, adler2, and len2.  Note
+   that the z_off_t type (like off_t) is a signed integer.  If len2 is
+   negative, the result has no meaning or utility.
 */
 
 ZEXTERN uLong ZEXPORT crc32   OF((uLong crc, const Bytef *buf, uInt len));
 /*
      Update a running CRC-32 with the bytes buf[0..len-1] and return the
    updated CRC-32.  If buf is Z_NULL, this function returns the required
-   initial value for the for the crc.  Pre- and post-conditioning (one's
-   complement) is performed within this function so it shouldn't be done by the
-   application.
+   initial value for the crc.  Pre- and post-conditioning (one's complement) is
+   performed within this function so it shouldn't be done by the application.
 
    Usage example:
 
@@ -1544,17 +1645,42 @@
                                          const char *version,
                                          int stream_size));
 #define deflateInit(strm, level) \
-        deflateInit_((strm), (level),       ZLIB_VERSION, sizeof(z_stream))
+        deflateInit_((strm), (level), ZLIB_VERSION, (int)sizeof(z_stream))
 #define inflateInit(strm) \
-        inflateInit_((strm),                ZLIB_VERSION, sizeof(z_stream))
+        inflateInit_((strm), ZLIB_VERSION, (int)sizeof(z_stream))
 #define deflateInit2(strm, level, method, windowBits, memLevel, strategy) \
         deflateInit2_((strm),(level),(method),(windowBits),(memLevel),\
-                      (strategy),           ZLIB_VERSION, sizeof(z_stream))
+                      (strategy), ZLIB_VERSION, (int)sizeof(z_stream))
 #define inflateInit2(strm, windowBits) \
-        inflateInit2_((strm), (windowBits), ZLIB_VERSION, sizeof(z_stream))
+        inflateInit2_((strm), (windowBits), ZLIB_VERSION, \
+                      (int)sizeof(z_stream))
 #define inflateBackInit(strm, windowBits, window) \
         inflateBackInit_((strm), (windowBits), (window), \
-                                            ZLIB_VERSION, sizeof(z_stream))
+                      ZLIB_VERSION, (int)sizeof(z_stream))
+
+#ifndef Z_SOLO
+
+/* gzgetc() macro and its supporting function and exposed data structure.  Note
+ * that the real internal state is much larger than the exposed structure.
+ * This abbreviated structure exposes just enough for the gzgetc() macro.  The
+ * user should not mess with these exposed elements, since their names or
+ * behavior could change in the future, perhaps even capriciously.  They can
+ * only be used by the gzgetc() macro.  You have been warned.
+ */
+struct gzFile_s {
+    unsigned have;
+    unsigned char *next;
+    z_off64_t pos;
+};
+ZEXTERN int ZEXPORT gzgetc_ OF((gzFile file));  /* backward compatibility */
+#ifdef Z_PREFIX_SET
+#  undef z_gzgetc
+#  define z_gzgetc(g) \
+          ((g)->have ? ((g)->have--, (g)->pos++, *((g)->next)++) : gzgetc(g))
+#else
+#  define gzgetc(g) \
+          ((g)->have ? ((g)->have--, (g)->pos++, *((g)->next)++) : gzgetc(g))
+#endif
 
 /* provide 64-bit offset functions if _LARGEFILE64_SOURCE defined, and/or
  * change the regular functions to 64 bits if _FILE_OFFSET_BITS is 64 (if
@@ -1562,7 +1688,7 @@
  * functions are changed to 64 bits) -- in case these are set on systems
  * without large file support, _LFS64_LARGEFILE must also be true
  */
-#if defined(_LARGEFILE64_SOURCE) && _LFS64_LARGEFILE-0
+#ifdef Z_LARGE64
    ZEXTERN gzFile ZEXPORT gzopen64 OF((const char *, const char *));
    ZEXTERN z_off64_t ZEXPORT gzseek64 OF((gzFile, z_off64_t, int));
    ZEXTERN z_off64_t ZEXPORT gztell64 OF((gzFile));
@@ -1571,14 +1697,23 @@
    ZEXTERN uLong ZEXPORT crc32_combine64 OF((uLong, uLong, z_off64_t));
 #endif
 
-#if !defined(ZLIB_INTERNAL) && _FILE_OFFSET_BITS-0 == 64 && _LFS64_LARGEFILE-0
-#  define gzopen gzopen64
-#  define gzseek gzseek64
-#  define gztell gztell64
-#  define gzoffset gzoffset64
-#  define adler32_combine adler32_combine64
-#  define crc32_combine crc32_combine64
-#  ifdef _LARGEFILE64_SOURCE
+#if !defined(ZLIB_INTERNAL) && defined(Z_WANT64)
+#  ifdef Z_PREFIX_SET
+#    define z_gzopen z_gzopen64
+#    define z_gzseek z_gzseek64
+#    define z_gztell z_gztell64
+#    define z_gzoffset z_gzoffset64
+#    define z_adler32_combine z_adler32_combine64
+#    define z_crc32_combine z_crc32_combine64
+#  else
+#    define gzopen gzopen64
+#    define gzseek gzseek64
+#    define gztell gztell64
+#    define gzoffset gzoffset64
+#    define adler32_combine adler32_combine64
+#    define crc32_combine crc32_combine64
+#  endif
+#  ifndef Z_LARGE64
      ZEXTERN gzFile ZEXPORT gzopen64 OF((const char *, const char *));
      ZEXTERN z_off_t ZEXPORT gzseek64 OF((gzFile, z_off_t, int));
      ZEXTERN z_off_t ZEXPORT gztell64 OF((gzFile));
@@ -1595,6 +1730,13 @@
    ZEXTERN uLong ZEXPORT crc32_combine OF((uLong, uLong, z_off_t));
 #endif
 
+#else /* Z_SOLO */
+
+   ZEXTERN uLong ZEXPORT adler32_combine OF((uLong, uLong, z_off_t));
+   ZEXTERN uLong ZEXPORT crc32_combine OF((uLong, uLong, z_off_t));
+
+#endif /* !Z_SOLO */
+
 /* hack for buggy compilers */
 #if !defined(ZUTIL_H) && !defined(NO_DUMMY_DECL)
     struct internal_state {int dummy;};
@@ -1603,8 +1745,21 @@
 /* undocumented functions */
 ZEXTERN const char   * ZEXPORT zError           OF((int));
 ZEXTERN int            ZEXPORT inflateSyncPoint OF((z_streamp));
-ZEXTERN const uLongf * ZEXPORT get_crc_table    OF((void));
+ZEXTERN const z_crc_t FAR * ZEXPORT get_crc_table    OF((void));
 ZEXTERN int            ZEXPORT inflateUndermine OF((z_streamp, int));
+ZEXTERN int            ZEXPORT inflateResetKeep OF((z_streamp));
+ZEXTERN int            ZEXPORT deflateResetKeep OF((z_streamp));
+#if defined(_WIN32) && !defined(Z_SOLO)
+ZEXTERN gzFile         ZEXPORT gzopen_w OF((const wchar_t *path,
+                                            const char *mode));
+#endif
+#if defined(STDC) || defined(Z_HAVE_STDARG_H)
+#  ifndef Z_SOLO
+ZEXTERN int            ZEXPORTVA gzvprintf Z_ARG((gzFile file,
+                                                  const char *format,
+                                                  va_list va));
+#  endif
+#endif
 
 #ifdef __cplusplus
 }
diff --git a/Modules/zlib/zlib.map b/Modules/zlib/zlib.map
--- a/Modules/zlib/zlib.map
+++ b/Modules/zlib/zlib.map
@@ -66,3 +66,18 @@
     gzclose_r;
     gzclose_w;
 } ZLIB_1.2.3.4;
+
+ZLIB_1.2.5.1 {
+    deflatePending;
+} ZLIB_1.2.3.5;
+
+ZLIB_1.2.5.2 {
+    deflateResetKeep;
+    gzgetc_;
+    inflateResetKeep;
+} ZLIB_1.2.5.1;
+
+ZLIB_1.2.7.1 {
+    inflateGetDictionary;
+    gzvprintf;
+} ZLIB_1.2.5.2;
diff --git a/Modules/zlib/zutil.c b/Modules/zlib/zutil.c
--- a/Modules/zlib/zutil.c
+++ b/Modules/zlib/zutil.c
@@ -1,17 +1,20 @@
 /* zutil.c -- target dependent utility functions for the compression library
- * Copyright (C) 1995-2005, 2010 Jean-loup Gailly.
+ * Copyright (C) 1995-2005, 2010, 2011, 2012 Jean-loup Gailly.
  * For conditions of distribution and use, see copyright notice in zlib.h
  */
 
 /* @(#) $Id$ */
 
 #include "zutil.h"
+#ifndef Z_SOLO
+#  include "gzguts.h"
+#endif
 
 #ifndef NO_DUMMY_DECL
 struct internal_state      {int dummy;}; /* for buggy compilers */
 #endif
 
-const char * const z_errmsg[10] = {
+z_const char * const z_errmsg[10] = {
 "need dictionary",     /* Z_NEED_DICT       2  */
 "stream end",          /* Z_STREAM_END      1  */
 "",                    /* Z_OK              0  */
@@ -85,27 +88,27 @@
 #ifdef FASTEST
     flags += 1L << 21;
 #endif
-#ifdef STDC
+#if defined(STDC) || defined(Z_HAVE_STDARG_H)
 #  ifdef NO_vsnprintf
-        flags += 1L << 25;
+    flags += 1L << 25;
 #    ifdef HAS_vsprintf_void
-        flags += 1L << 26;
+    flags += 1L << 26;
 #    endif
 #  else
 #    ifdef HAS_vsnprintf_void
-        flags += 1L << 26;
+    flags += 1L << 26;
 #    endif
 #  endif
 #else
-        flags += 1L << 24;
+    flags += 1L << 24;
 #  ifdef NO_snprintf
-        flags += 1L << 25;
+    flags += 1L << 25;
 #    ifdef HAS_sprintf_void
-        flags += 1L << 26;
+    flags += 1L << 26;
 #    endif
 #  else
 #    ifdef HAS_snprintf_void
-        flags += 1L << 26;
+    flags += 1L << 26;
 #    endif
 #  endif
 #endif
@@ -181,6 +184,7 @@
 }
 #endif
 
+#ifndef Z_SOLO
 
 #ifdef SYS16BIT
 
@@ -316,3 +320,5 @@
 }
 
 #endif /* MY_ZCALLOC */
+
+#endif /* !Z_SOLO */
diff --git a/Modules/zlib/zutil.h b/Modules/zlib/zutil.h
--- a/Modules/zlib/zutil.h
+++ b/Modules/zlib/zutil.h
@@ -1,5 +1,5 @@
 /* zutil.h -- internal interface and configuration of the compression library
- * Copyright (C) 1995-2010 Jean-loup Gailly.
+ * Copyright (C) 1995-2013 Jean-loup Gailly.
  * For conditions of distribution and use, see copyright notice in zlib.h
  */
 
@@ -13,7 +13,7 @@
 #ifndef ZUTIL_H
 #define ZUTIL_H
 
-#if ((__GNUC__-0) * 10 + __GNUC_MINOR__-0 >= 33) && !defined(NO_VIZ)
+#ifdef HAVE_HIDDEN
 #  define ZLIB_INTERNAL __attribute__((visibility ("hidden")))
 #else
 #  define ZLIB_INTERNAL
@@ -21,7 +21,7 @@
 
 #include "zlib.h"
 
-#ifdef STDC
+#if defined(STDC) && !defined(Z_SOLO)
 #  if !(defined(_WIN32_WCE) && defined(_MSC_VER))
 #    include <stddef.h>
 #  endif
@@ -29,6 +29,10 @@
 #  include <stdlib.h>
 #endif
 
+#ifdef Z_SOLO
+   typedef long ptrdiff_t;  /* guess -- will be caught if guess is wrong */
+#endif
+
 #ifndef local
 #  define local static
 #endif
@@ -40,13 +44,13 @@
 typedef ush FAR ushf;
 typedef unsigned long  ulg;
 
-extern const char * const z_errmsg[10]; /* indexed by 2-zlib_error */
+extern z_const char * const z_errmsg[10]; /* indexed by 2-zlib_error */
 /* (size given to avoid silly warnings with Visual C++) */
 
 #define ERR_MSG(err) z_errmsg[Z_NEED_DICT-(err)]
 
 #define ERR_RETURN(strm,err) \
-  return (strm->msg = (char*)ERR_MSG(err), (err))
+  return (strm->msg = ERR_MSG(err), (err))
 /* To be used only when the state is known to be valid */
 
         /* common constants */
@@ -78,16 +82,18 @@
 
 #if defined(MSDOS) || (defined(WINDOWS) && !defined(WIN32))
 #  define OS_CODE  0x00
-#  if defined(__TURBOC__) || defined(__BORLANDC__)
-#    if (__STDC__ == 1) && (defined(__LARGE__) || defined(__COMPACT__))
-       /* Allow compilation with ANSI keywords only enabled */
-       void _Cdecl farfree( void *block );
-       void *_Cdecl farmalloc( unsigned long nbytes );
-#    else
-#      include <alloc.h>
+#  ifndef Z_SOLO
+#    if defined(__TURBOC__) || defined(__BORLANDC__)
+#      if (__STDC__ == 1) && (defined(__LARGE__) || defined(__COMPACT__))
+         /* Allow compilation with ANSI keywords only enabled */
+         void _Cdecl farfree( void *block );
+         void *_Cdecl farmalloc( unsigned long nbytes );
+#      else
+#        include <alloc.h>
+#      endif
+#    else /* MSC or DJGPP */
+#      include <malloc.h>
 #    endif
-#  else /* MSC or DJGPP */
-#    include <malloc.h>
 #  endif
 #endif
 
@@ -107,18 +113,20 @@
 
 #ifdef OS2
 #  define OS_CODE  0x06
-#  ifdef M_I86
+#  if defined(M_I86) && !defined(Z_SOLO)
 #    include <malloc.h>
 #  endif
 #endif
 
 #if defined(MACOS) || defined(TARGET_OS_MAC)
 #  define OS_CODE  0x07
-#  if defined(__MWERKS__) && __dest_os != __be_os && __dest_os != __win32_os
-#    include <unix.h> /* for fdopen */
-#  else
-#    ifndef fdopen
-#      define fdopen(fd,mode) NULL /* No fdopen() */
+#  ifndef Z_SOLO
+#    if defined(__MWERKS__) && __dest_os != __be_os && __dest_os != __win32_os
+#      include <unix.h> /* for fdopen */
+#    else
+#      ifndef fdopen
+#        define fdopen(fd,mode) NULL /* No fdopen() */
+#      endif
 #    endif
 #  endif
 #endif
@@ -153,14 +161,15 @@
 #  endif
 #endif
 
-#if defined(__BORLANDC__)
+#if defined(__BORLANDC__) && !defined(MSDOS)
   #pragma warn -8004
   #pragma warn -8008
   #pragma warn -8066
 #endif
 
 /* provide prototypes for these when building zlib without LFS */
-#if !defined(_LARGEFILE64_SOURCE) || _LFS64_LARGEFILE-0 == 0
+#if !defined(_WIN32) && \
+    (!defined(_LARGEFILE64_SOURCE) || _LFS64_LARGEFILE-0 == 0)
     ZEXTERN uLong ZEXPORT adler32_combine64 OF((uLong, uLong, z_off_t));
     ZEXTERN uLong ZEXPORT crc32_combine64 OF((uLong, uLong, z_off_t));
 #endif
@@ -177,42 +186,7 @@
 
          /* functions */
 
-#if defined(STDC99) || (defined(__TURBOC__) && __TURBOC__ >= 0x550)
-#  ifndef HAVE_VSNPRINTF
-#    define HAVE_VSNPRINTF
-#  endif
-#endif
-#if defined(__CYGWIN__)
-#  ifndef HAVE_VSNPRINTF
-#    define HAVE_VSNPRINTF
-#  endif
-#endif
-#ifndef HAVE_VSNPRINTF
-#  ifdef MSDOS
-     /* vsnprintf may exist on some MS-DOS compilers (DJGPP?),
-        but for now we just assume it doesn't. */
-#    define NO_vsnprintf
-#  endif
-#  ifdef __TURBOC__
-#    define NO_vsnprintf
-#  endif
-#  ifdef WIN32
-     /* In Win32, vsnprintf is available as the "non-ANSI" _vsnprintf. */
-#    if !defined(vsnprintf) && !defined(NO_vsnprintf)
-#      if !defined(_MSC_VER) || ( defined(_MSC_VER) && _MSC_VER < 1500 )
-#         define vsnprintf _vsnprintf
-#      endif
-#    endif
-#  endif
-#  ifdef __SASC
-#    define NO_vsnprintf
-#  endif
-#endif
-#ifdef VMS
-#  define NO_vsnprintf
-#endif
-
-#if defined(pyr)
+#if defined(pyr) || defined(Z_SOLO)
 #  define NO_MEMCPY
 #endif
 #if defined(SMALL_MEDIUM) && !defined(_MSC_VER) && !defined(__SC__)
@@ -261,14 +235,19 @@
 #  define Tracecv(c,x)
 #endif
 
-
-voidpf ZLIB_INTERNAL zcalloc OF((voidpf opaque, unsigned items,
-                        unsigned size));
-void ZLIB_INTERNAL zcfree  OF((voidpf opaque, voidpf ptr));
+#ifndef Z_SOLO
+   voidpf ZLIB_INTERNAL zcalloc OF((voidpf opaque, unsigned items,
+                                    unsigned size));
+   void ZLIB_INTERNAL zcfree  OF((voidpf opaque, voidpf ptr));
+#endif
 
 #define ZALLOC(strm, items, size) \
            (*((strm)->zalloc))((strm)->opaque, (items), (size))
 #define ZFREE(strm, addr)  (*((strm)->zfree))((strm)->opaque, (voidpf)(addr))
 #define TRY_FREE(s, p) {if (p) ZFREE(s, p);}
 
+/* Reverse the bytes in a 32-bit value */
+#define ZSWAP32(q) ((((q) >> 24) & 0xff) + (((q) >> 8) & 0xff00) + \
+                    (((q) & 0xff00) << 8) + (((q) & 0xff) << 24))
+
 #endif /* ZUTIL_H */
diff --git a/PC/VS9.0/pythoncore.vcproj b/PC/VS9.0/pythoncore.vcproj
--- a/PC/VS9.0/pythoncore.vcproj
+++ b/PC/VS9.0/pythoncore.vcproj
@@ -1246,74 +1246,6 @@
 					>
 				</File>
 				<File
-					RelativePath="..\..\Modules\zlib\gzio.c"
-					>
-					<FileConfiguration
-						Name="Release|Win32"
-						>
-						<Tool
-							Name="VCCLCompilerTool"
-							PreprocessorDefinitions="_CRT_SECURE_NO_DEPRECATE"
-						/>
-					</FileConfiguration>
-					<FileConfiguration
-						Name="Release|Win64"
-						>
-						<Tool
-							Name="VCCLCompilerTool"
-							PreprocessorDefinitions="_CRT_SECURE_NO_DEPRECATE"
-						/>
-					</FileConfiguration>
-					<FileConfiguration
-						Name="Debug|Win32"
-						>
-						<Tool
-							Name="VCCLCompilerTool"
-							PreprocessorDefinitions="_CRT_SECURE_NO_DEPRECATE"
-						/>
-					</FileConfiguration>
-					<FileConfiguration
-						Name="Debug|Win64"
-						>
-						<Tool
-							Name="VCCLCompilerTool"
-							PreprocessorDefinitions="_CRT_SECURE_NO_DEPRECATE"
-						/>
-					</FileConfiguration>
-					<FileConfiguration
-						Name="PGInstrument|Win32"
-						>
-						<Tool
-							Name="VCCLCompilerTool"
-							PreprocessorDefinitions="_CRT_SECURE_NO_DEPRECATE"
-						/>
-					</FileConfiguration>
-					<FileConfiguration
-						Name="PGInstrument|Win64"
-						>
-						<Tool
-							Name="VCCLCompilerTool"
-							PreprocessorDefinitions="_CRT_SECURE_NO_DEPRECATE"
-						/>
-					</FileConfiguration>
-					<FileConfiguration
-						Name="PGUpdate|Win32"
-						>
-						<Tool
-							Name="VCCLCompilerTool"
-							PreprocessorDefinitions="_CRT_SECURE_NO_DEPRECATE"
-						/>
-					</FileConfiguration>
-					<FileConfiguration
-						Name="PGUpdate|Win64"
-						>
-						<Tool
-							Name="VCCLCompilerTool"
-							PreprocessorDefinitions="_CRT_SECURE_NO_DEPRECATE"
-						/>
-					</FileConfiguration>
-				</File>
-				<File
 					RelativePath="..\..\Modules\zlib\infback.c"
 					>
 				</File>
diff --git a/Python/compile.c b/Python/compile.c
--- a/Python/compile.c
+++ b/Python/compile.c
@@ -94,6 +94,7 @@
     COMPILER_SCOPE_MODULE,
     COMPILER_SCOPE_CLASS,
     COMPILER_SCOPE_FUNCTION,
+    COMPILER_SCOPE_LAMBDA,
     COMPILER_SCOPE_COMPREHENSION,
 };
 
@@ -104,6 +105,7 @@
     PySTEntryObject *u_ste;
 
     PyObject *u_name;
+    PyObject *u_qualname;  /* dot-separated qualified name (lazy) */
     int u_scope_type;
 
     /* The following fields are dicts that map objects to
@@ -199,6 +201,7 @@
                                 expr_ty starargs,
                                 expr_ty kwargs);
 static int compiler_try_except(struct compiler *, stmt_ty);
+static int compiler_set_qualname(struct compiler *);
 
 static PyCodeObject *assemble(struct compiler *, int addNone);
 static PyObject *__doc__;
@@ -506,6 +509,7 @@
     }
     Py_CLEAR(u->u_ste);
     Py_CLEAR(u->u_name);
+    Py_CLEAR(u->u_qualname);
     Py_CLEAR(u->u_consts);
     Py_CLEAR(u->u_names);
     Py_CLEAR(u->u_varnames);
@@ -620,6 +624,11 @@
     if (compiler_use_new_block(c) == NULL)
         return 0;
 
+    if (u->u_scope_type != COMPILER_SCOPE_MODULE) {
+        if (!compiler_set_qualname(c))
+            return 0;
+    }
+
     return 1;
 }
 
@@ -647,72 +656,77 @@
 
 }
 
-static PyObject *
-compiler_scope_qualname(struct compiler *c, identifier scope_name)
+static int
+compiler_set_qualname(struct compiler *c)
 {
+    _Py_static_string(dot, ".");
+    _Py_static_string(dot_locals, ".<locals>");
     Py_ssize_t stack_size;
-    int global_scope;
-    _Py_static_string(dot, ".");
-    _Py_static_string(locals, "<locals>");
-    struct compiler_unit *u;
-    PyObject *capsule, *name, *seq, *dot_str, *locals_str;
-
-    u = c->u;
-    seq = PyList_New(0);
-    if (seq == NULL)
-        return NULL;
-
+    struct compiler_unit *u = c->u;
+    PyObject *name, *base, *dot_str, *dot_locals_str;
+
+    base = NULL;
     stack_size = PyList_GET_SIZE(c->c_stack);
     assert(stack_size >= 1);
-    global_scope = stack_size == 1;
-    if (scope_name != NULL && !global_scope) {
-        int scope;
-        PyObject *mangled;
+    if (stack_size > 1) {
+        int scope, force_global = 0;
+        struct compiler_unit *parent;
+        PyObject *mangled, *capsule;
+
         capsule = PyList_GET_ITEM(c->c_stack, stack_size - 1);
-        u = (struct compiler_unit *)PyCapsule_GetPointer(capsule, COMPILER_CAPSULE_NAME_COMPILER_UNIT);
-        assert(u);
-        mangled = _Py_Mangle(u->u_private, scope_name);
-        if (!mangled)
-            return NULL;
-        scope = PyST_GetScope(u->u_ste, mangled);
-        Py_DECREF(mangled);
-        assert(scope != GLOBAL_IMPLICIT);
-        if (scope == GLOBAL_EXPLICIT)
-            global_scope = 1;
-    }
-    if (!global_scope) {
-        Py_ssize_t i;
-        for (i = 1; i < stack_size; i++) {
-            capsule = PyList_GET_ITEM(c->c_stack, i);
-            u = (struct compiler_unit *)PyCapsule_GetPointer(capsule, COMPILER_CAPSULE_NAME_COMPILER_UNIT);
-            assert(u);
-            assert(u->u_scope_type != COMPILER_SCOPE_MODULE);
-            if (PyList_Append(seq, u->u_name))
-                goto _error;
-            if (u->u_scope_type == COMPILER_SCOPE_FUNCTION) {
-                locals_str = _PyUnicode_FromId(&locals);
-                if (locals_str == NULL)
-                    goto _error;
-                if (PyList_Append(seq, locals_str))
-                    goto _error;
+        parent = (struct compiler_unit *)PyCapsule_GetPointer(capsule, COMPILER_CAPSULE_NAME_COMPILER_UNIT);
+        assert(parent);
+
+        if (u->u_scope_type == COMPILER_SCOPE_FUNCTION || u->u_scope_type == COMPILER_SCOPE_CLASS) {
+            assert(u->u_name);
+            mangled = _Py_Mangle(parent->u_private, u->u_name);
+            if (!mangled)
+                return 0;
+            scope = PyST_GetScope(parent->u_ste, mangled);
+            Py_DECREF(mangled);
+            assert(scope != GLOBAL_IMPLICIT);
+            if (scope == GLOBAL_EXPLICIT)
+                force_global = 1;
+        }
+
+        if (!force_global) {
+            if (parent->u_scope_type == COMPILER_SCOPE_FUNCTION
+                || parent->u_scope_type == COMPILER_SCOPE_LAMBDA) {
+                dot_locals_str = _PyUnicode_FromId(&dot_locals);
+                if (dot_locals_str == NULL)
+                    return 0;
+                base = PyUnicode_Concat(parent->u_qualname, dot_locals_str);
+                if (base == NULL)
+                    return 0;
+            }
+            else {
+                Py_INCREF(parent->u_qualname);
+                base = parent->u_qualname;
             }
         }
     }
 
-    u = c->u;
-    if (PyList_Append(seq, u->u_name))
-        goto _error;
-    dot_str = _PyUnicode_FromId(&dot);
-    if (dot_str == NULL)
-        goto _error;
-    name = PyUnicode_Join(dot_str, seq);
-    Py_DECREF(seq);
-    Py_XINCREF(name);
-    return name;
-
-_error:
-    Py_XDECREF(seq);
-    return NULL;
+    if (base != NULL) {
+        dot_str = _PyUnicode_FromId(&dot);
+        if (dot_str == NULL) {
+            Py_DECREF(base);
+            return 0;
+        }
+        name = PyUnicode_Concat(base, dot_str);
+        Py_DECREF(base);
+        if (name == NULL)
+            return 0;
+        PyUnicode_Append(&name, u->u_name);
+        if (name == NULL)
+            return 0;
+    }
+    else {
+        Py_INCREF(u->u_name);
+        name = u->u_name;
+    }
+    u->u_qualname = name;
+
+    return 1;
 }
 
 /* Allocate a new block and return a pointer to it.
@@ -1662,9 +1676,10 @@
         VISIT_IN_SCOPE(c, stmt, st);
     }
     co = assemble(c, 1);
-    qualname = compiler_scope_qualname(c, s->v.FunctionDef.name);
+    qualname = c->u->u_qualname;
+    Py_INCREF(qualname);
     compiler_exit_scope(c);
-    if (qualname == NULL || co == NULL) {
+    if (co == NULL) {
         Py_XDECREF(qualname);
         Py_XDECREF(co);
         return 0;
@@ -1734,14 +1749,8 @@
             return 0;
         }
         Py_DECREF(str);
-        /* store the __qualname__ */
-        str = compiler_scope_qualname(c, s->v.ClassDef.name);
-        if (!str) {
-            compiler_exit_scope(c);
-            return 0;
-        }
-        ADDOP_O(c, LOAD_CONST, str, consts);
-        Py_DECREF(str);
+        assert(c->u->u_qualname);
+        ADDOP_O(c, LOAD_CONST, c->u->u_qualname, consts);
         str = PyUnicode_InternFromString("__qualname__");
         if (!str || !compiler_nameop(c, str, Store)) {
             Py_XDECREF(str);
@@ -1856,7 +1865,7 @@
         if (res < 0) return 0;
         kw_default_count = res;
     }
-    if (!compiler_enter_scope(c, name, COMPILER_SCOPE_FUNCTION,
+    if (!compiler_enter_scope(c, name, COMPILER_SCOPE_LAMBDA,
                               (void *)e, e->lineno))
         return 0;
 
@@ -1875,9 +1884,10 @@
         ADDOP_IN_SCOPE(c, RETURN_VALUE);
     }
     co = assemble(c, 1);
-    qualname = compiler_scope_qualname(c, NULL);
+    qualname = c->u->u_qualname;
+    Py_INCREF(qualname);
     compiler_exit_scope(c);
-    if (qualname == NULL || co == NULL)
+    if (co == NULL)
         return 0;
 
     arglength = asdl_seq_LEN(args->defaults);
@@ -3152,9 +3162,10 @@
     }
 
     co = assemble(c, 1);
-    qualname = compiler_scope_qualname(c, NULL);
+    qualname = c->u->u_qualname;
+    Py_INCREF(qualname);
     compiler_exit_scope(c);
-    if (qualname == NULL || co == NULL)
+    if (co == NULL)
         goto error;
 
     if (!compiler_make_closure(c, co, 0, qualname))
diff --git a/Python/importlib.h b/Python/importlib.h
--- a/Python/importlib.h
+++ b/Python/importlib.h
[stripped]
diff --git a/Python/pythonrun.c b/Python/pythonrun.c
--- a/Python/pythonrun.c
+++ b/Python/pythonrun.c
@@ -116,6 +116,10 @@
 
 PyThreadState *_Py_Finalizing = NULL;
 
+/* Hack to force loading of object files */
+int (*_PyOS_mystrnicmp_hack)(const char *, const char *, Py_ssize_t) = \
+    PyOS_mystrnicmp; /* Python/pystrcmp.o */
+
 /* PyModule_GetWarningsModule is no longer necessary as of 2.6
 since _warnings is builtin.  This API should not be used. */
 PyObject *
diff --git a/Python/traceback.c b/Python/traceback.c
--- a/Python/traceback.c
+++ b/Python/traceback.c
@@ -471,13 +471,13 @@
     write(fd, buffer, len);
 }
 
-/* Format an integer in range [0; 0xffffffff] to hexdecimal of 'width' digits,
+/* Format an integer in range [0; 0xffffffff] to hexadecimal of 'width' digits,
    and write it into the file fd.
 
    This function is signal safe. */
 
 static void
-dump_hexadecimal(int width, unsigned long value, int fd)
+dump_hexadecimal(int fd, unsigned long value, int width)
 {
     int len;
     char buffer[sizeof(unsigned long) * 2 + 1];
@@ -544,15 +544,15 @@
         }
         else if (ch < 0xff) {
             PUTS(fd, "\\x");
-            dump_hexadecimal(2, ch, fd);
+            dump_hexadecimal(fd, ch, 2);
         }
         else if (ch < 0xffff) {
             PUTS(fd, "\\u");
-            dump_hexadecimal(4, ch, fd);
+            dump_hexadecimal(fd, ch, 4);
         }
         else {
             PUTS(fd, "\\U");
-            dump_hexadecimal(8, ch, fd);
+            dump_hexadecimal(fd, ch, 8);
         }
     }
     if (truncated)
@@ -603,7 +603,7 @@
     unsigned int depth;
 
     if (write_header)
-        PUTS(fd, "Traceback (most recent call first):\n");
+        PUTS(fd, "Stack (most recent call first):\n");
 
     frame = _PyThreadState_GetFrame(tstate);
     if (frame == NULL)
@@ -641,8 +641,8 @@
         PUTS(fd, "Current thread 0x");
     else
         PUTS(fd, "Thread 0x");
-    dump_hexadecimal(sizeof(long)*2, (unsigned long)tstate->thread_id, fd);
-    PUTS(fd, ":\n");
+    dump_hexadecimal(fd, (unsigned long)tstate->thread_id, sizeof(long)*2);
+    PUTS(fd, " (most recent call first):\n");
 }
 
 const char*
diff --git a/configure b/configure
--- a/configure
+++ b/configure
@@ -10601,6 +10601,35 @@
 
 fi
 rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for prlimit" >&5
+$as_echo_n "checking for prlimit... " >&6; }
+cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+#include <sys/time.h>
+#include <sys/resource.h>
+
+int
+main ()
+{
+void *x=prlimit
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"; then :
+
+$as_echo "#define HAVE_PRLIMIT 1" >>confdefs.h
+
+   { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
+$as_echo "yes" >&6; }
+else
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+
 # On some systems (eg. FreeBSD 5), we would find a definition of the
 # functions ctermid_r, setgroups in the library, but no prototype
 # (e.g. because we use _XOPEN_SOURCE). See whether we can take their
diff --git a/configure.ac b/configure.ac
--- a/configure.ac
+++ b/configure.ac
@@ -2927,6 +2927,16 @@
    AC_MSG_RESULT(yes)],
   [AC_MSG_RESULT(no)
 ])
+AC_MSG_CHECKING(for prlimit)
+AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
+#include <sys/time.h>
+#include <sys/resource.h>
+    ]], [[void *x=prlimit]])],
+  [AC_DEFINE(HAVE_PRLIMIT, 1, Define if you have the 'prlimit' functions.)
+   AC_MSG_RESULT(yes)],
+  [AC_MSG_RESULT(no)
+])
+
 # On some systems (eg. FreeBSD 5), we would find a definition of the
 # functions ctermid_r, setgroups in the library, but no prototype
 # (e.g. because we use _XOPEN_SOURCE). See whether we can take their
diff --git a/pyconfig.h.in b/pyconfig.h.in
--- a/pyconfig.h.in
+++ b/pyconfig.h.in
@@ -627,6 +627,9 @@
 /* Define to 1 if you have the `pread' function. */
 #undef HAVE_PREAD
 
+/* Define if you have the 'prlimit' functions. */
+#undef HAVE_PRLIMIT
+
 /* Define to 1 if you have the <process.h> header file. */
 #undef HAVE_PROCESS_H
 

-- 
Repository URL: http://hg.python.org/cpython


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