Regressions on trunk at revision 212460 vs revision 212454

[H.J. Lu ia32 Core i7]

New failures:

New passes:
FAIL: gcc.dg/cpp/macsyntx.c (test for excess errors)
FAIL: gcc.dg/cpp/macsyntx.c  (test for warnings, line 54)
FAIL: gcc.dg/cpp/macsyntx.c  (test for warnings, line 55)
FAIL: gcc.dg/cpp/macsyntx.c  (test for warnings, line 62)
FAIL: gcc.dg/cpp/sysmac1.c (test for excess errors)
FAIL: gcc.dg/cpp/sysmac1.c  (test for warnings, line 25)