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/world.dm

@@ -132,7 +132,7 @@ Starting up. [time2text(world.timeofday, "hh:mm.ss")]
 		var/n = 0
 		var/admins = 0
 
-		for(var/client/C in client_list)
+		for(var/client/C in clients)
 			if(C.holder)
 				if(C.holder.fakekey)
 					continue	//so stealthmins aren't revealed by the hub
@@ -202,7 +202,7 @@ Starting up. [time2text(world.timeofday, "hh:mm.ss")]
 			if(pos)
 				var/m_key = copytext(line, 1, pos)
 				var/a_lev = copytext(line, pos + 3, length(line) + 1)
-				admins[m_key] = new /datum/admins(a_lev)
+				admin_datums[m_key] = new /datum/admins(a_lev)
 				diary << ("ADMIN: [m_key] = [a_lev]")
 	else
 		//The current admin system uses SQL
@@ -258,9 +258,9 @@ Starting up. [time2text(world.timeofday, "hh:mm.ss")]
 			var/datum/admins/AD = new /datum/admins(adminrank)
 			AD.level = adminlevel //Legacy support for old verbs
 			AD.sql_permissions = permissions_actual
-			admins[adminckey] = AD
+			admin_datums[adminckey] = AD
 
-		if(!admins)
+		if(!admin_datums)
 			diary << "The database query in load_admins() resulted in no admins being added to the list. Reverting to legacy system."
 			config.admin_legacy_system = 1
 			load_admins()