COMP: Update python - Fix configuration error on 32-bit system of type i686

The commit fixes the following error:

// ---------------
CMAKE_SYSTEM_PROCESSOR:i686

/home/thiele/Slicer-SuperBuild-Debug/python-build/../Python-2.7.3/Modules/_ctypes/libffi/src/i686/ffi.c

Tried extensions .c .C .c++ .cc .cpp .cxx .m .M .mm .h .hh .h++ .hm .hpp
.hxx .in .txx
Call Stack (most recent call first):
cmake/extensions/CMakeLists.txt:183 (add_python_extension)

// ---------------

[python]

$ git shortlog 47845c5..ee53f79 --no-merges
Jean-Christophe Fillion-Robin (1):
Fix configuration of ctypes extension in case system processor is i686

Thanks to "Thiele Kobus <TKOBUS@partners.org>" for his help identifying
the issue.

git-svn-id: http://svn.slicer.org/Slicer4/trunk@23806 3bd1e089-480b-0410-8dfb-8563597acbee