Regressions on trunk at revision 218987 vs revision 218985

[H.J. Lu x32]

New failures:

New passes:
ERROR: g++.dg/cpp1y/lambda-generic-variadic2.C  -std=c++11: syntax error in target selector "target cxx14" for " dg-error 21 "" "" { target { ! cxx14 } } "
ERROR: g++.dg/cpp1y/lambda-generic-variadic2.C  -std=c++14: syntax error in target selector "target cxx14" for " dg-error 21 "" "" { target { ! cxx14 } } "
ERROR: g++.dg/cpp1y/lambda-generic-variadic2.C  -std=c++98: syntax error in target selector "target cxx14" for " dg-error 21 "" "" { target { ! cxx14 } } "