Merge commit 'b58f810669d9c17bcc025b7560de01d162856f34' into merge_20130226

Conflicts:
	include/clang/Basic/LangOptions.def
	lib/Sema/SemaDeclAttr.cpp

Change-Id: Ia10b4d3b2c949a72d328cb58b113f90237d4a5d5