Make-lang.in: Update to handle command-line options.

ada:
	* Make-lang.in: Update to handle command-line options.
	* lang.opt: New file.
	* misc.c: Include aoptions.h.
	(cl_options_count, cl_options): Remove.
	(gnat_handle_option): New.
	(gnat_decode_option): Remove.
	(LANG_HOOKS_DECODE_OPTION): Remove.
	(LANG_HOOKS_HANDLE_OPTION): Override.

From-SVN: r67795