* doc/options.texi (NoDriverArg): Document.
	* gcc.c (cpp_unique_options): Generate -MD and -MMD instead of
	-MDX and -MMDX.
	* opt-functions.awk (switch_flags): Handle NoDriverArg.
	* opts-common.c (decode_cmdline_option): Ignore CL_SEPARATE
	marking for CL_NO_DRIVER_ARG options when in the driver.
	* opts.h (CL_NO_DRIVER_ARG): Define.
	(CL_PARAMS, CL_WARNING, CL_OPTIMIZATION, CL_DRIVER, CL_TARGET,
	CL_COMMON): Update values.

c-family:
	* c.opt (MDX): Change back to MD.  Mark NoDriverArg instead of
	RejectDriver.
	(MMDX): Change back to MMD.  Mark NoDriverArg instead of
	RejectDriver.
	* c-opts.c (c_common_handle_option): Use OPT_MD and OPT_MMD
	instead of OPT_MDX and OPT_MMDX.

fortran:
	* lang.opt (MDX): Change back to MD.  Mark NoDriverArg instead of
	RejectDriver.
	(MMDX): Change back to MMD.  Mark NoDriverArg instead of
	RejectDriver.
	* cpp.c (gfc_cpp_handle_option): Use OPT_MD and OPT_MMD instead of
	OPT_MDX and OPT_MMDX.

From-SVN: r163280