* c-opts.c (deps_seen, deps_file, deferred_count, deferred_size,
	handle_deferred_opts, sanitize_cpp_opts, defer_opt,
	struct deferred_opt): New.
	(COMMAND_LINE_OPTIONS): Add -M*.
	(missing_arg): Update.
	(c_common_decode_option): Handle -M*.
	(c_common_post_options): Handle -M*.  Use sanitize_cpp_opts;
	don't call cpp_post_options.
	(c_common_finish, check_deps_environment_vars): Update.
	* cppfiles.c (stack_include_file, handle_missing_header): Update.
	* cpphash.h (CPP_PRINT_DEPS): Remove.
	* cppinit.c: Don't include version.h.
	(cpp_create_reader): Don't call deps_init.  Initialize
	warn_long_long.
	(cpp_read_main_file): Init deps if necessary.
	(cpp_destroy): Conditionally free deps.
	(cpp_finish): Update.
	(no_tgt): Remove.
	(COMMAND_LINE_OPTIONS, cpp_handle_option): Remove -M*.
	(cpp_post_options): Rename post_options.
	* cpplib.h (struct cpp_options): Remove some dependency options;
	move others to a new structure.
	(cpp_post_options): Remove.
	(cpp_finish): Comment.
	* fix-header.c (read_scan_file): Don't call cpp_post_options.
treelang:
	* treelang.c: Remove cpp_post_options.

From-SVN: r56239