Updates the atom_pool, now datum_pool, to handle any datum object.

Makes the garbage collector similarly robust. Continues the whole Destroy/qdel porting.

code/modules/library/lib_items.dm

@@ -56,20 +56,20 @@
 	switch(severity)
 		if(1.0)
 			for(var/obj/item/weapon/book/b in contents)
-				del(b)
-			del(src)
+				qdel(b)
+			qdel(src)
 			return
 		if(2.0)
 			for(var/obj/item/weapon/book/b in contents)
 				if (prob(50)) b.loc = (get_turf(src))
-				else del(b)
-			del(src)
+				else qdel(b)
+			qdel(src)
 			return
 		if(3.0)
 			if (prob(50))
 				for(var/obj/item/weapon/book/b in contents)
 					b.loc = (get_turf(src))
-				del(src)
+				qdel(src)
 			return
 		else
 	return

code/modules/library/lib_machines.dm

@@ -463,6 +463,6 @@ datum/borrowbook // Datum used to keep track of who has borrowed what when and f
 		b.dat = O:info
 		b.name = "Print Job #" + "[rand(100, 999)]"
 		b.icon_state = "book[rand(1,7)]"
-		del(O)
+		qdel(O)
 	else
 		..()