* 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.