for(var/bad_code in world)

Removes a very large amount of world loops.
Adds a macro to painlessly generate a global list, and the needed code to modify the list when an object is made or deleted automatically.
Cleans up some commented out code.

code/_helpers/game.dm

@@ -33,7 +33,7 @@
 		.= res
 
 /proc/get_area_name(N) //get area by its name
-	for(var/area/A in world)
+	for(var/area/A in all_areas)
 		if(A.name == N)
 			return A
 	return 0

code/_helpers/unsorted.dm

@@ -503,9 +503,9 @@ Turf and target are seperate in case you want to teleport some distance from a t
 		moblist.Add(M)
 	for(var/mob/living/simple_animal/M in sortmob)
 		moblist.Add(M)
-//	for(var/mob/living/silicon/hivebot/M in world)
+//	for(var/mob/living/silicon/hivebot/M in sortmob)
 //		mob_list.Add(M)
-//	for(var/mob/living/silicon/hive_mainframe/M in world)
+//	for(var/mob/living/silicon/hive_mainframe/M in sortmob)
 //		mob_list.Add(M)
 	return moblist
 
@@ -672,7 +672,7 @@ proc/GaussRandRound(var/sigma,var/roundto)
 //Returns: all the areas in the world
 /proc/return_areas()
 	var/list/area/areas = list()
-	for(var/area/A in world)
+	for(var/area/A in all_areas)
 		areas += A
 	return areas
 
@@ -690,7 +690,7 @@ proc/GaussRandRound(var/sigma,var/roundto)
 		areatype = areatemp.type
 
 	var/list/areas = new/list()
-	for(var/area/N in world)
+	for(var/area/N in all_areas)
 		if(istype(N, areatype)) areas += N
 	return areas
 
@@ -704,7 +704,7 @@ proc/GaussRandRound(var/sigma,var/roundto)
 		areatype = areatemp.type
 
 	var/list/turfs = new/list()
-	for(var/area/N in world)
+	for(var/area/N in all_areas)
 		if(istype(N, areatype))
 			for(var/turf/T in N) turfs += T
 	return turfs
@@ -719,7 +719,7 @@ proc/GaussRandRound(var/sigma,var/roundto)
 		areatype = areatemp.type
 
 	var/list/atoms = new/list()
-	for(var/area/N in world)
+	for(var/area/N in all_areas)
 		if(istype(N, areatype))
 			for(var/atom/A in N)
 				atoms += A