Regressions on 4.6 at revision 182470 vs revision 182430

[H.J. Lu Intel64]

New failures:
FAIL: ext/type_traits/add_unsigned_floating_neg.cc  (test for errors, line 69)
FAIL: ext/type_traits/add_unsigned_floating_neg.cc  (test for errors, line 69)
FAIL: ext/type_traits/add_unsigned_floating_neg.cc (test for excess errors)
FAIL: ext/type_traits/add_unsigned_floating_neg.cc (test for excess errors)
FAIL: ext/type_traits/add_unsigned_integer_neg.cc  (test for errors, line 63)
FAIL: ext/type_traits/add_unsigned_integer_neg.cc  (test for errors, line 63)
FAIL: ext/type_traits/add_unsigned_integer_neg.cc (test for excess errors)
FAIL: ext/type_traits/add_unsigned_integer_neg.cc (test for excess errors)
FAIL: ext/type_traits/remove_unsigned_floating_neg.cc  (test for errors, line 112)
FAIL: ext/type_traits/remove_unsigned_floating_neg.cc  (test for errors, line 112)
FAIL: ext/type_traits/remove_unsigned_floating_neg.cc (test for excess errors)
FAIL: ext/type_traits/remove_unsigned_floating_neg.cc (test for excess errors)
FAIL: ext/type_traits/remove_unsigned_integer_neg.cc  (test for errors, line 106)
FAIL: ext/type_traits/remove_unsigned_integer_neg.cc  (test for errors, line 106)
FAIL: ext/type_traits/remove_unsigned_integer_neg.cc (test for excess errors)
FAIL: ext/type_traits/remove_unsigned_integer_neg.cc (test for excess errors)

New passes:
ERROR: g++.dg/cpp0x/rv-cast3.C: syntax error in target selector "target c++11" for " dg-do 2 run { target c++11 } "
ERROR: g++.dg/cpp0x/rv-cast3.C: syntax error in target selector "target c++11" for " dg-do 2 run { target c++11 } "
ERROR: g++.dg/cpp0x/rv-cast4.C: syntax error in target selector "target c++11" for " dg-do 2 compile { target c++11 } "
ERROR: g++.dg/cpp0x/rv-cast4.C: syntax error in target selector "target c++11" for " dg-do 2 compile { target c++11 } "