python: add patch to fix logic to get gcc paths

The Python setup.py has a function called add_gcc_paths(), which
executes gcc -E -v to get the list of header paths searched by
gcc. However, the logic of setup.py is only valid with the normal
english output of gcc: it doesn't work if a non-english locale is
set. This causes setup.py to not find certain headers (such as zlib.h)
and therefore disabling the build of such extensions.

Reported-by: Bruno Coudoin <bruno.coudoin@gcompris.net>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>