MFC: r236829

MFC:	r236829

Bring a couple of libstdc++ patches from Apple's llvm-gcc project.

Modified Fri Jul 10 07:44:34 2009 CDT by rafael
backport part of
http://gcc.gnu.org/ml/gcc-cvs/2007-10/msg00118.html

The patch is for libstdc++ and it was GPL2 at the time.

Modified Tue Apr 29 01:20:19 2008 CDT by asl
Backport from mainline (pre-GPLv3).
Fix for sizeof(const void*) > sizeof(unsigned long).

git-svn-id: svn://svn.freebsd.org/base/stable/8@237508 ccf9f872-aa2e-dd11-9fc8-001c23d0bc1f