Regressions on trunk at revision 206061 vs revision 206051

[H.J. Lu ia32]

New failures:
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)

New passes:
FAIL: g++.dg/ipa/devirt-13.C -std=gnu++11  scan-ipa-dump cgraph "Devirtualizing call"
FAIL: g++.dg/ipa/devirt-13.C -std=gnu++98  scan-ipa-dump cgraph "Devirtualizing call"
FAIL: g++.dg/opt/devirt2.C -std=gnu++11  scan-assembler-times xyzzy 2
FAIL: g++.dg/opt/devirt2.C -std=gnu++98  scan-assembler-times xyzzy 2