* opts.h (struct cl_option): Add warn_message field.
	(struct cl_decoded_option): Add warn_message field.
	* doc/options.texi (Ignore, Warn): Document.
	* opt-functions.awk (needs_state_p): Don't consider aliases or
	ignored options to need state saved.
	* optc-gen.awk: Handle Warn and Ignore.
	* opth-gen.awk: Output OPT_SPECIAL_ignore.
	* opts-common.c (decode_cmdline_option): Set warn_message field.
	Handle ignored options.
	(decode_cmdline_options_to_array, generate_option,
	generate_option_input_file): Set warn_message field.
	(read_cmdline_option): Generate warnings from warn_message field.
	Handle ignored options.
	* common.opt (Wunreachable-code, fargument-alias,
	fargument-noalias, fargument-noalias-global,
	fargument-noalias-anything, fcse-skip-blocks, fforce-addr,
	floop-optimize, frerun-loop-opt, fsched2-use-traces, fsee,
	fstrength-reduce, ftree-store-ccp, ftree-store-copy-prop,
	ftree-salias): Mark Ignore.
	* config/i386/i386.h (CC1_CPU_SPEC_1): Don't handle -mcpu,
	-mintel-syntax and -mno-intel-syntax here.
	* config/i386/i386.opt (mcpu=, mintel-syntax): Define as aliases
	using Warn.
	* opts.c (common_handle_option): Don't handle options marked as
	ignored.
	(enable_warning_as_error): Handle ignored options.

c-family:
	* c.opt (Wimport, fall-virtual, falt-external-templates,
	fdefault-inline, fenum-int-equiv, fexternal-templates,
	fguiding-decls, fhonor-std, fhuge-objects, flabels-ok,
	fname-mangling-version-, fnew-abi, fnonnull-objects,
	foptional-diags, fsquangle, fstrict-prototype, fthis-is-variable,
	fvtable-gc, fvtable-thunks, fxref): Mark with Ignore and Warn as
	applicable.
	(fhandle-exceptions): Mark with Alias and Warn.
	* c-opts.c (c_common_handle_option): Don't handle options marked
	as ignored.

po:
	* exgettext: Handle {} in operand of MissingArgError.  Handle
	Warn.

From-SVN: r163771