Changed some global_list stuff:

>tried to make the comments less confusing.
>Removed the procs for rebuilding the lists (they weren't meant to be used and half were broken anyway).
>added a directory. It maps ckey to client like so directory[ckey] = client. It could be used for PMs, banning, and various other admin tools rather than using \ref[]
>var/list/admins is now a list of clients whom are admins.
>var/list/admin_datums is what var/list/admins used to be. A map from ckey -> admin datum
Most of this is so I can add modular admin ranks in a non-horrendous way and fix some existing issues.
>var/list/client_list is now var/list/clients (laziness sorry)
>removed some needless loops and stuff.

git-svn-id: http://tgstation13.googlecode.com/svn/trunk@4951 316c924e-a436-60f5-8080-3fe189b3f50e

code/modules/mob/mob.dm

@@ -1,10 +1,16 @@
 /mob/Del()//This makes sure that mobs with clients/keys are not just deleted from the game.
+	mob_list -= src
+	dead_mob_list -= src
+	living_mob_list -= src
 	ghostize()
-	remove_from_mob_list(src)
 	..()
 
 /mob/New()
-	add_to_mob_list(src)
+	mob_list += src
+	if(stat == DEAD)
+		dead_mob_list += src
+	else
+		living_mob_list += src
 	..()
 
 /mob/proc/Cell()