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/mining/abandonedcrates.dm

@@ -164,7 +164,7 @@
 					user << "<span class='danger'>The crate's anti-tamper system activates!</span>"
 					var/turf/T = get_turf(src.loc)
 					explosion(T, 0, 0, 0, 1)
-					del(src)
+					qdel(src)
 					return
 		else
 			user << "<span class='notice'>You attempt to interact with the device using a hand gesture, but it appears this crate is from before the DECANECT came out.</span>"