2011-12-06  Jeffrey Yasskin  <jyasskin@google.com>

	Backport from rev 180707

	2011-10-31  Jason Merrill  <jason@redhat.com>

		PR c++/50920
		* include/cpplib.h (enum c_lang): Rename CLK_CXX0X to CLK_CXX11,
		CLK_GNUCXX0X to CLK_GNUCXX11.