Makefile.in (options.c options.h): Use stamp file s-options to avoid unnecessary rebuilds.

	* Makefile.in (options.c options.h): Use stamp file s-options to
	avoid unnecessary rebuilds.
	(options.o): New target listing dependencies.
	(gtyp-gen.h): Use stamp file s-gtyp-gen.
	(STAGESTUFF): Add s-gtyp-gen.

From-SVN: r76803