* Makerules (install-lib.so rules): Undouble $s in target and dep

* Makerules (install-lib.so rules): Undouble $s in target and dep

 	parts of o-iterator-doit defns.
	(unversioned libraries install rule): Fix pattern.

	* mach/Makefile (mach-src-headers): Use $(base-machine) instead of
	$(config-machine).
	($(includedir)/machine): Likewise.

	* config.make.in (base-machine): New variable.
	* configure.in (machine): Move case stmt to set $machine out of sysdep
	dirs AC_CACHE_CHECK.
	(base_machine): New variable, set in that switch and AC_SUBST'd.

	* Makerules (stub-$(subdir)): Use file name in directory as output,
	since cmd is cd'd.