cc/gcc: add patch for 4.7.2

This patch fixes compilation of gcc when C++ is enabled and MMX is
available, but not SSE/SSE2/AVX.

Signed-off-by: Richard Braun <rbraun@sceen.net>
Message-Id: <20121126105642.GA12098@mail.sceen.net>
Patchwork-Id: 201648

 python

 import sys

 sys.path.insert(0, '@@PREFIX@@/share/gcc-@@VERSION@@/python')

 from libstdcxx.v6.printers import register_libstdcxx_printers

 register_libstdcxx_printers (None)

 end