Regressions on 4.5 at revision 183666 vs revision 183364

[H.J. Lu Intel64]

New failures:
FAIL: g++.dg/cpp0x/vt-34052.C (test for excess errors)
FAIL: g++.dg/ext/has_nothrow_copy-6.C (test for excess errors)
FAIL: g++.dg/template/error18.C  (test for errors, line 11)
FAIL: g++.old-deja/g++.brendan/parse5.C (test for excess errors)
FAIL: g++.old-deja/g++.law/enum4.C  (test for warnings, line 14)

New passes:
FAIL: g++.dg/debug/enum-1.C -gxcoff3 (test for excess errors)
FAIL: g++.dg/debug/minimal1.C -gdwarf-2 -g1 -O2 (test for excess errors)
FAIL: g++.dg/template/static17.C (test for excess errors)
FAIL: g++.dg/warn/unit-1.C (test for excess errors)
FAIL: libgomp.c++/ctor-6.C  -O1  (test for excess errors)