Undefine _POSIX_C_SOURCE to fix socket.inet_aton()

socket.inet_aton() in Python 2.5.6 was returning 8-byte strings when
built with Pythonbrew on OS X 10.7.3.  The 8-byte strings were a result
of a broken type cast identified in:

- http://bugs.python.org/issue767150
- http://bugs.python.org/issue1008086

Part of the problem was that autoconf was failing to pick up on C lib's
inet_aton(), exposing the broken type cast mentioned in the bug reports
above.  I found an existing precedence for suppressing _POSIX_C_SOURCE
on older Darwins, which, when extended to cover 10.7.3, magically makes
this bug go away.
pythoninstaller.py: fix setuptools error message log location

When setuptools fails to install properly, the error message asks the users
to check the wrong location for the build.log.

    William Ting
Fix for #85: Python 2.6.5's SSL Module fails to build on Ubuntu 11.10+

* Created patch for detecting disabled SSL2 in _ssl.c
* Added patch to pythoninstall script.

To Test
-------

`python lib/python2.6/test/test_ssl.py`
Add Python 2.6.8
pythonbrew_systemwide gets its own binary

 * For installation through other means than the download-script.
fix `ImportError: No module named _sqlite3` in CentOS 5, python-2.7.3
rename for more specific path
polish up
add new patch
fix wrong year, silly me...
Bugfix: rename command now exits on error

When the rename command is called and the source_dir doesn't exist
or the target_dir as well, it exits after logging the error
Enhancement: cloning a virtual environment.
Removed some unnecessary code from util.copy_libs()
Forgot to remove a debug print
Bugfix: now copies easy-install.pth (path) and README now updated
Merge branch 'fix_setuptools_error_msg' of https://github.com/wting/pythonbrew into wting-fix_setuptools_error_msg
Merge branch 'feature/ssl2_missing' of https://github.com/ampledata/pythonbrew into ampledata-feature/ssl2_missing
add note about readline in README
Merge branch 'master' of https://github.com/edavis/pythonbrew into edavis-master
Merge branch 'master' of https://github.com/stylight/pythonbrew into stylight-master