Merge from svn://gcc.gnu.org/svn/gcc/branches/linaro/gcc-4_8-branch into linaro-staging

Conflicts:
	gcc/ChangeLog
	gcc/DATESTAMP
	gcc/config/aarch64/aarch64-simd-builtins.def
	gcc/cp/ChangeLog
	gcc/fortran/ChangeLog
	gcc/go/ChangeLog
	gcc/go/go-gcc.cc
	gcc/testsuite/ChangeLog
	libitm/ChangeLog
	libitm/configure.tgt
	libstdc++-v3/ChangeLog

Change-Id: I6ce46dfbaf93bd9744551f2d551e3b1dec55f675