[Distutils] pip and virtualenv release candidates

[Marcus Smith]

pip-1.4rc2 and virtualenv-1.10rc3 are available for testing from github.

A few highlights:
 - pip added support for installing and building wheel archives.
   (
http://www.pip-installer.org/en/latest/cookbook.html#building-and-installing-wheels
)
 - virtualenv is now using the new merged setuptools, and no longer
supports distribute.
 - pip now only installs stable versions by default, and offers a new --pre
option to also find pre-releases.
 - Dropped support for Python 2.5.

Changelogs:
 pip: http://www.pip-installer.org/en/release-1.4/news.html
 virtualenv: http://www.virtualenv.org/en/release-1.10/news.html

Download Links:
 pip:
  gz: https://github.com/pypa/pip/archive/1.4rc2.tar.gz
    md5=0426430fc8a261c83bcd083fb03fb7d6
  zip: https://github.com/pypa/pip/archive/1.4rc2.zip
    md5=c86dc0d94ed787eadba6dceb06f1676f
 virtualenv:
  gz: https://github.com/pypa/virtualenv/archive/1.10rc3.tar.gz
    md5=b24cdf59b561acf26ae3f639098d5a34
  zip: https://github.com/pypa/virtualenv/archive/1.10rc3.zip
    md5=a6ee1a1570a751aa50f95833d9898649

Installation:
 The easiest way to try them both and *not* affect your current system, is
like so:
 e.g. on Linux:
  $ curl -L -O https://github.com/pypa/virtualenv/archive/1.10rc3.tar.gz
  $ echo "b24cdf59b561acf26ae3f639098d5a34  1.10rc3.tar.gz" | md5sum -c
  1.10rc3.tar.gz: OK
  $ tar zxf 1.10rc3.tar.gz
  $ python virtualenv-1.10rc3/virtualenv.py myVE
  $ myVE/bin/pip --version
   pip 1.4rc2

   *Note*: If instead, you choose to upgrade an existing pip (and
setuptools), know this:
    1) pip's wheel support requires setuptools>=0.8b2 (this will become
final before pip is released final)
    2) setuptools-0.8bx is not on pypi and can be found here:
https://bitbucket.org/pypa/setuptools/downloads
    3) Older pip's can not currently upgrade distribute to setuptools
(until distribute-0.7.3 is released on ~July-7th)
         (for more upgrade details:
http://www.pip-installer.org/en/latest/installing.html#requirements)

Offering Feedback:
 You can respond to this email, or log issues in our tracker:
   https://github.com/pypa/pip/issues?state=open
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