Regressions on trunk at revision 205785 vs revision 205782

[H.J. Lu Intel64]

New failures:

New passes:
FAIL: 17_intro/headers/c++200x/stdc++.cc (test for excess errors)
FAIL: 17_intro/headers/c++200x/stdc++_multiple_inclusion.cc (test for excess errors)
FAIL: c-c++-common/tsan/tls_race.c  -O2 -flto -fno-use-linker-plugin -flto-partition=none  execution test