Regressions on trunk at revision 229966 vs revision 229947

[Bill Schmidt]

New failures:

New passes:
FAIL: compiler driver --help=c++ option(s): "^ +-.*[^:.]\$" absent from output: "  -Wplacement-new             Warn for placement new expressions with undefined behavior"
FAIL: compiler driver --help=warnings option(s): "^ +-.*[^:.]\$" absent from output: "  -Wplacement-new             Warn for placement new expressions with undefined behavior"