Fix for a bug with unittest and multiprocessing on Python 2.x on Windows

There is a bug in all Pythons up to 2.7.6 (i.e. all 2.x so far) that breaks using unittest and multiprocessing module on Windows.

If you see complaints about __main__ in multiprocessing/forking.py that's this bug

To fix, patch your global python with this fix http://hg.python.org/cpython/rev/c82588ca3a79

It's fixed in new Pythons 3.x but haven't been backported to 2.x yet