modutils/*: rewrite by Timo Teras <timo.teras AT iki.fi>

- a lot faster (linear algorithmic complexity, smaller memory foot print)
- a lot smaller (the old code was overly complicated)
- loading of aliases is now module-init-tools compliant
- blacklisting is done correctly (-b option added)
- module argument quoting done right
- depmod now correctly generates modules.symbols and modules.alias

add/remove: 16/21 grow/shrink: 4/6 up/down: 6930/-9316 Total: -2386 bytes
   text    data     bss     dec     hex filename
 806039     592    6680  813311   c68ff busybox_old
 803498     592    6676  810766   c5f0e busybox_unstripped

libbb/llist.c

@@ -90,7 +90,6 @@ void FAST_FUNC llist_free(llist_t *elm, void (*freeit) (void *data))
 	}
 }
 
-#ifdef UNUSED
 /* Reverse list order. */
 llist_t* FAST_FUNC llist_rev(llist_t *list)
 {
@@ -105,4 +104,3 @@ llist_t* FAST_FUNC llist_rev(llist_t *list)
 	}
 	return rev;
 }
-#endif