Regressions on trunk at revision 274689 vs revision 274631

[H.J. Lu (Intel64 AVX)]

New failures:
FAIL: compiler driver --help=ada option(s): "^ +-.*[^:.]$" absent from output: "  -fdump-scos                 Dump Source Coverage Obligations"
FAIL: compiler driver --help=ada option(s): "^ +-.*[^:.]$" absent from output: "  -fdump-scos                 Dump Source Coverage Obligations"
FAIL: compiler driver --help=ada option(s): "^ +-.*[^:.]$" absent from output: "  -fdump-scos                 Dump Source Coverage Obligations"

New passes:
FAIL: gcc.dg/tree-prof/val-prof-9.c scan-tree-dump-times optimized "return 0" 1