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/events/carp_migration.dm

@@ -45,4 +45,4 @@
 		if(!C.stat)
 			var/turf/T = get_turf(C)
 			if(istype(T, /turf/space))
-				del(C)
+				qdel(C)

code/modules/events/rogue_drones.dm

@@ -40,7 +40,7 @@
 		D.z = config.admin_levels[1]
 		D.has_loot = 0
 
-		del(D)
+		qdel(D)
 		num_recovered++
 
 	if(num_recovered > drones_list.len * 0.75)