Regressions on trunk at revision 206004 vs revision 206000

[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: gcc.dg/vect/vect-nop-move.c execution test