Impliments Ghom review, reverts blood list back to component

code/game/objects/items/stacks/stack.dm

@@ -388,10 +388,10 @@
 	else
 		. = ..()
 
-/obj/item/stack/proc/copy_evidences(obj/item/stack/from as obj)
-	blood_DNA = from.blood_DNA
-	fingerprints  = from.fingerprints
-	fingerprintshidden  = from.fingerprintshidden
+/obj/item/stack/proc/copy_evidences(obj/item/stack/from)
+	add_blood(from.return_blood_DNA())
+	add_fingerprint_list(from.return_fingerprints())
+	add_hiddenprint_list(from.return_hiddenprints())
 	fingerprintslast  = from.fingerprintslast
 	//TODO bloody overlay
 
@@ -436,4 +436,4 @@
 
 /datum/stack_recipe_list/New(title, recipes)
 	src.title = title
-	src.recipes = recipes
+	src.recipes = recipes