- use complementally '!' to '?' - 'ask' is best 'free' char for this.

- more long opt compatibility, can set flag for long opt struct now
- more logic: check opt-depend requires and global requires, special for 'id' and 'start-stop-daemon' applets.

util-linux/hwclock.c

@@ -209,7 +209,7 @@ static const struct option hwclock_long_options[] = {
 	bb_applet_long_options = hwclock_long_options;
 #endif
 
-	bb_opt_complementally = "!r~ws:w~rs:s~wr:l~u:u~l";
+	bb_opt_complementally = "?r~ws:w~rs:s~wr:l~u:u~l";
 	opt = bb_getopt_ulflags(argc, argv, "lursw");
 
 	/* If -u or -l wasn't given check if we are using utc */