`.' in SUBDIRS changes order of builds:

	`.' in SUBDIRS changes order of builds:
	* Makefile.am (SUBDIRS): Added `.'.  Put tests last.
	* tags.am (TAGS): Don't look for TAGS file in `.'.
	* automake.texi (Top level): Document SUBDIRS change.
	* automake.in (handle_installdirs): Create separate installdirs-am
	target.
	(handle_merge_targets): Don't put all-am onto @all.  Fixed error
	message.  Correctly handle install-info.  Give error if
	install-info-local inappropriately defined.  Don't special-case
	install-data, install-exec, install, uninstall, or all.
	(handle_subdirs): Don't push `-recursive' target names onto
	corresponding lists.
	(do_one_merge_target): Always define `-am' form of rule, and point
	ordinary form to `-am' or `-recursive' as appropriate.
	Special-case `all'.
	(do_check_merge_target): Generate check-am target.
	(handle_dist_worker): Use target_defined.
	(handle_dist): Likewise.
	(handle_merge_targets): Likewise.
	(do_one_merge_target): Likewise.
	(do_check_merge_target): Likewise.
	(do_one_clean_target): Likewise.
	(initialize_per_input): Initialize $all_target.
	(do_one_clean_target): Always generate -am form of rule; other
	changes for new SUBDIRS change.
	(handle_clean): Always generate clean-am form of rule.
	(handle_tags): Only build subdir if not `.'.
	(handle_dist_worker): Skip `.' directory.
	* subdirs.am: Allow `.' to be specified in SUBDIRS.