* c-opts.c (finish_options): New.
	(COMMAND_LINE_OPTIONS, c_common_decode_option): Add -imacros.
	(missing_arg): Handle OPT_include and OPT_imacros.
	(c_common_init, c_common_parse_file): Use finish_options.
	(handle_deferred_opts): Update.
	* cppinit.c (struct cpp_pending): Remove imacros_head and imacros_tail.
	(cpp_finish_options): Don't handle -imacros here.
	(no_fil): Remove.
	(COMMAND_LINE_OPTIONS, cpp_handle_option): Don't handle -imacros.

From-SVN: r64378