* config/alpha/alpha.h (WORD_SWITCH_TAKES_ARG): Remove.
	* config/cris/cris.h (WORD_SWITCH_TAKES_ARG): Remove.
	(CC1_SPEC): Don't handle -target.
	* config/darwin.h (WORD_SWITCH_TAKES_ARG): Remove single-argument
	options.
	* config/darwin.opt (Zallowable_client, Zbundle_loader,
	Zdylib_file, Zexported_symbols_list, Zfn_seg_addr_table_filename,
	Zimage_base, Zinit, Zinstall_name, Zmultiply_defined,
	Zmultiplydefinedunused, Zseg_addr_table, Zsegs_read_only_addr,
	Zsegs_read_write_addr, Zumbrella, Zunexported_symbols_list,
	Zweak_reference_mismatches, client_name, compatibility_version,
	current_version, dylinker_install_name, pagezero_size,
	read_only_relocs, seg1addr, segs_read_only_addr,
	segs_read_write_addr, sub_library, sub_umbrella): New.
	* config/freebsd-spec.h (BSD_WORD_SWITCH_TAKES_ARG): Remove.
	* config/freebsd.h (WORD_SWITCH_TAKES_ARG): Remove.
	* config/freebsd.opt: New.
	* config/interix.h (WORD_SWITCH_TAKES_ARG): Remove.
	* config/mips/iris6.h (WORD_SWITCH_TAKES_ARG): Remove.
	* config/rpath.opt: New.
	* config.gcc (*-*-freebsd*): Use rpath.opt and freebsd.opt.
	(alpha*-dec-osf5.1*, i[34567]86-*-interix3*, mips-sgi-irix6.5*):
	Use rpath.opt.

From-SVN: r166156