Regressions on trunk at revision 201360 vs revision 201359

[Kirill Yukhin [Intel64 Core AVX-i]]

New failures:

New passes:
FAIL: g++.old-deja/g++.law/weak.C -std=gnu++11 (test for excess errors)
FAIL: g++.old-deja/g++.law/weak.C -std=gnu++11 (test for excess errors)
FAIL: g++.old-deja/g++.law/weak.C -std=gnu++98 (test for excess errors)
FAIL: g++.old-deja/g++.law/weak.C -std=gnu++98 (test for excess errors)
FAIL: libstdc++-abi/abi_check
FAIL: libstdc++-abi/abi_check