-tg- atom pooling system, qdel changes

This commit first and foremost ports the -tg- atom pooling system, and
removes the old experimental system entirely.

Secondly, this PR modifies the qdel system to use a -tg- lookalike
"destroy hint" system, which means that individual objects can tell qdel
what to do with them beyond taking care of things they need to delete.
This ties into the atom pooling system via a new hint define,
QDEL_HINT_PUTINPOOL, which will place the atom in the pool instead of
deleting it as per standard.

Emitter beams are now fully pooled.

Qdel now has semi-compatibility with all datum types, however it is not
the same as -tg-'s "Queue everything!" system. It simply passes it through
the GC immediately and adds it to the "hard del" lists. This means that
reagents can be qdel'ed, but there is no purpose as of yet, as it is more
or less the same as just deleting them, with the added effect of adding
logs of them being deleted to the garbage collector.

code/game/objects/structures/crates_lockers/closets.dm

@@ -26,7 +26,7 @@
 // Fix for #383 - C4 deleting fridges with corpses
 /obj/structure/closet/Destroy()
 	dump_contents()
-	..()
+	return ..()
 
 /obj/structure/closet/alter_health()
 	return get_turf(src)

code/game/objects/structures/displaycase.dm

@@ -98,7 +98,7 @@
 /obj/structure/displaycase/ex_act(severity)
 	switch(severity)
 		if (1)
-			getFromPool(/obj/item/weapon/shard, loc)
+			PoolOrNew(/obj/item/weapon/shard, loc)
 			if (occupant)
 				dump()
 			del(src)
@@ -121,13 +121,13 @@
 
 /obj/structure/displaycase/blob_act()
 	if (prob(75))
-		getFromPool(/obj/item/weapon/shard, loc)
+		PoolOrNew(/obj/item/weapon/shard, loc)
 		if(occupant) dump()
 		del(src)
 
 
 /obj/structure/displaycase/meteorhit(obj/O as obj)
-		getFromPool(/obj/item/weapon/shard, loc)
+		PoolOrNew(/obj/item/weapon/shard, loc)
 		if(occupant) dump()
 		del(src)
 
@@ -137,7 +137,7 @@
 		if (!( src.destroyed ))
 			src.density = 0
 			src.destroyed = 1
-			getFromPool(/obj/item/weapon/shard, loc)
+			PoolOrNew(/obj/item/weapon/shard, loc)
 			playsound(get_turf(src), "shatter", 70, 1)
 			update_icon()
 	else

code/game/objects/structures/false_walls.dm

@@ -37,7 +37,7 @@
 
 	for(var/obj/structure/falsewall/W in range(temploc,1))
 		W.relativewall()
-	..()
+	return ..()
 
 /obj/structure/falsewall/relativewall()
 

code/game/objects/structures/grille.dm

@@ -37,17 +37,16 @@
 	icon='icons/fence-ns.dmi'
 
 /obj/structure/grille/Destroy()
-	loc = null //garbage collect
-
+	return QDEL_HINT_PUTINPOOL //pool grilles
 
 /obj/structure/grille/ex_act(severity)
-	returnToPool(src)
+	qdel(src)
 
 /obj/structure/grille/blob_act()
-	returnToPool(src)
+	qdel(src)
 
 /obj/structure/grille/meteorhit(var/obj/M)
-	returnToPool(src)
+	qdel(src)
 
 
 /obj/structure/grille/Bumped(atom/user)
@@ -144,7 +143,7 @@
 		if(!shock(user, 100))
 			playsound(loc, 'sound/items/Wirecutter.ogg', 100, 1)
 			new /obj/item/stack/rods(loc, 2)
-			returnToPool(src)
+			qdel(src)
 	else if((isscrewdriver(W)) && (istype(loc, /turf/simulated) || anchored))
 		if(!shock(user, 90))
 			playsound(loc, 'sound/items/Screwdriver.ogg', 100, 1)
@@ -224,12 +223,12 @@
 			icon_state = "brokengrille"
 			density = 0
 			destroyed = 1
-			new /obj/item/stack/rods(loc)
+			PoolOrNew(/obj/item/stack/rods,loc)
 
 		else
 			if(health <= -6)
-				new /obj/item/stack/rods(loc)
-				returnToPool(src)
+				PoolOrNew(/obj/item/stack/rods,loc)
+				qdel(src)
 				return
 	return
 

code/game/objects/structures/lamarr_cage.dm

@@ -13,7 +13,7 @@
 /obj/structure/lamarr/ex_act(severity)
 	switch(severity)
 		if (1)
-			getFromPool(/obj/item/weapon/shard, loc)
+			PoolOrNew(/obj/item/weapon/shard, loc)
 			Break()
 			qdel(src)
 		if (2)
@@ -35,13 +35,13 @@
 
 /obj/structure/lamarr/blob_act()
 	if (prob(75))
-		getFromPool(/obj/item/weapon/shard, loc)
+		PoolOrNew(/obj/item/weapon/shard, loc)
 		Break()
 		qdel(src)
 
 
 /obj/structure/lamarr/meteorhit(obj/O as obj)
-		getFromPool(/obj/item/weapon/shard, loc)
+		PoolOrNew(/obj/item/weapon/shard, loc)
 		Break()
 		qdel(src)
 
@@ -51,7 +51,7 @@
 		if (!( src.destroyed ))
 			src.density = 0
 			src.destroyed = 1
-			getFromPool(/obj/item/weapon/shard, loc)
+			PoolOrNew(/obj/item/weapon/shard, loc)
 			playsound(src, "shatter", 70, 1)
 			Break()
 	else

code/game/objects/structures/lattice.dm

@@ -30,7 +30,7 @@
 		if(locate(/obj/structure/lattice, get_step(src, dir)))
 			L = locate(/obj/structure/lattice, get_step(src, dir))
 			L.updateOverlays(src.loc)
-	..()
+	return ..()
 
 /obj/structure/lattice/blob_act()
 	qdel(src)

code/game/objects/structures/musician.dm

@@ -21,7 +21,7 @@
 
 /datum/song/Destroy()
 	instrumentObj = null
-	return
+	return ..()
 
 // note is a number from 1-7 for A-G
 // acc is either "b", "n", or "#"
@@ -320,7 +320,7 @@
 /obj/structure/piano/Destroy()
 	del(song)
 	song = null
-	..()
+	return ..()
 
 /obj/structure/piano/attack_hand(mob/user as mob)
 	interact(user)

code/game/objects/structures/stool_bed_chair_nest/bed.dm

@@ -27,8 +27,7 @@
 
 /obj/structure/stool/bed/Destroy()
 	unbuckle()
-	..()
-	return
+	return ..()
 
 /obj/structure/stool/bed/attack_hand(mob/user as mob)
 	manual_unbuckle(user)

code/game/objects/structures/tables_racks.dm

@@ -42,7 +42,7 @@
 
 /obj/structure/table/Destroy()
 	update_adjacent()
-	..()
+	return ..()
 
 /obj/structure/table/proc/destroy()
 	new parts(loc)
@@ -725,9 +725,9 @@
 /obj/structure/table/glass/proc/collapse() //glass table collapse is called twice in this code, more efficent to just have a proc
 	src.visible_message("<span class='warning'>\The [src] shatters, and the frame collapses!</span>", "<span class='warning'>You hear metal collapsing and glass shattering.</span>")
 	new /obj/item/weapon/table_parts/glass(loc)
-	getFromPool(/obj/item/weapon/shard, loc)
+	PoolOrNew(/obj/item/weapon/shard, loc)
 	if(prob(50)) //50% chance to spawn two shards
-		getFromPool(/obj/item/weapon/shard, loc)
+		PoolOrNew(/obj/item/weapon/shard, loc)
 	qdel(src)
 
 /obj/structure/table/glass/attackby(obj/item/I as obj, mob/user as mob, params)

code/game/objects/structures/transit_tubes/station.dm

@@ -23,7 +23,7 @@
 
 /obj/structure/transit_tube/station/Destroy()
 	processing_objects -= src
-	..()
+	return ..()
 
 // Stations which will send the tube in the opposite direction after their stop.
 /obj/structure/transit_tube/station/reverse

code/game/objects/structures/transit_tubes/transit_tube_pod.dm

@@ -21,9 +21,9 @@
 
 /obj/structure/transit_tube_pod/Destroy()
 	for(var/atom/movable/AM in contents)
-		AM.loc = loc
+		AM.forceMove(get_turf(src))
 
-	..()
+	return ..()
 
 /obj/structure/transit_tube_pod/proc/follow_tube(var/reverse_launch)
 	if(moving)

code/game/objects/structures/windoor_assembly.dm

@@ -35,7 +35,7 @@ obj/structure/windoor_assembly/New(dir=NORTH)
 obj/structure/windoor_assembly/Destroy()
 	density = 0
 	air_update_turf(1)
-	..()
+	return ..()
 
 /obj/structure/windoor_assembly/Move()
 	var/turf/T = loc

code/game/objects/structures/window.dm

@@ -53,7 +53,7 @@ var/global/wcCommon = pick(list("#379963", "#0d8395", "#58b5c3", "#49e46e", "#8f
 // This should result in the same materials used to make the window.
 /obj/structure/window/proc/destroy()
 	for(var/i=0;i<sheets;i++)
-		getFromPool(shardtype, loc)
+		PoolOrNew(shardtype, loc)
 
 		if(reinf)
 			new /obj/item/stack/rods(loc)
@@ -223,7 +223,7 @@ var/global/wcCommon = pick(list("#379963", "#0d8395", "#58b5c3", "#49e46e", "#8f
 	else if(istype(W, /obj/item/weapon/wrench) && !anchored && health > 7) //Disassemble deconstructed window into parts
 		playsound(src.loc, 'sound/items/Ratchet.ogg', 50, 1)
 		for(var/i=0;i<sheets;i++)
-			var/obj/item/stack/sheet/glass/NG = getFromPool(glasstype, src.loc)
+			var/obj/item/stack/sheet/glass/NG = PoolOrNew(glasstype, src.loc)
 			for (var/obj/item/stack/sheet/glass/G in src.loc) //Stack em up
 				if(G==NG)
 					continue
@@ -335,7 +335,7 @@ var/global/wcCommon = pick(list("#379963", "#0d8395", "#58b5c3", "#49e46e", "#8f
 	air_update_turf(1)
 	if(loc && !disassembled)
 		playsound(get_turf(src), "shatter", 70, 1)
-	..()
+	return ..()
 
 
 /obj/structure/window/Move()