minor changes to get numpy working with locally bundled python.
- enable site-packages for bundled python distrobution, py3.2 had a problem where it would try to parse headers we didnt include, but its resolved now.
- workaround for glitch I was having on arch-linux where lib64 would be be used for the bundled python directory when it was just a symlink.


git-svn-id: https://svn.blender.org/svnroot/bf-blender/trunk/blender@56239 954f8c5b-7b00-dc11-b283-0030488c597c