Regressions on trunk at revision 253248 vs revision 253223

[H.J. Lu]

New failures:

New passes:
FAIL: compiler driver --help=fortran option(s): "^ +-.*[^:.]$" absent from output: "  -Wdo-subscript              Warn about possibly incorrect subscripts in do loops"
FAIL: compiler driver --help=fortran option(s): "^ +-.*[^:.]$" absent from output: "  -Wdo-subscript              Warn about possibly incorrect subscripts in do loops"
FAIL: compiler driver --help=warnings option(s): "^ +-.*[^:.]$" absent from output: "  -Wdo-subscript              Warn about possibly incorrect subscripts in do loops"
FAIL: compiler driver --help=warnings option(s): "^ +-.*[^:.]$" absent from output: "  -Wdo-subscript              Warn about possibly incorrect subscripts in do loops"