* mkgroup.c: Drop support for NT4 domains.

	* mkgroup.c: Drop support for NT4 domains.
	* mkpasswd.c: Ditto.
	(psx_dir): Remove.
	(current_user): Drop support for -m option.  Use $HOME as is since it's
	a POSIX path anyway.
	(enum_users): Drop support for -m option.
	(usage): Mention -m option as ignored.
	(main): Drop support for -m option.  Mark ignored options as deprecated.
	* utils.sgml (mkpasswd): Remove description of -m option.