revert last two commits. vfork cannot be used in subroutine,

it trashes stack on return

util-linux/mount.c

@@ -890,7 +890,6 @@ get_mountport(struct pmap *pm_mnt,
 }
 
 #if BB_MMU
-/* Unlike bb_daemonize(), parent does NOT exit here, but returns 0 */
 static int daemonize(void)
 {
 	int fd;