python-cython: add patch to fix build error with some distutils packages

* fails with TypeError: unsupported operand type(s) for +: 'NoneType' and 'str' in setup.py
  when using python-2.6 or python-2.7 (don't know about python-3*)

Signed-off-by: Martin Jansa <Martin.Jansa@gmail.com>
Signed-off-by: Koen Kooi <koen@dominion.thruhere.net>