[Python-Dev] autoconf update to 2.65 and cleanup

[Matthias Klose]

configure is still generated by 2.61; would it be possible to update to 2.65? 
The cr_lf issue mentioned in [1] seems to be resolved, ac_cr is now defined as

   ac_cr=`echo X | tr X '\015'`

Proposing to

  - fix some quoting in help strings and code snippets (#8509)
  - update to autoconf 2.65 (#8510)
  - convert obsolete macros (AC_HELP_STRING, AC_TRY_*, AC_AIX, ...)
    one by one (tracking these in separate reports).

Could this be done for both trunk and py3k branch, even if 2.7 already is in 
beta?

   Matthias

[1] http://mail.python.org/pipermail/python-dev/2008-November/083781.html