DNA2 Bug Fixes - Part 2

We discovered that most of the problems were were having was because of BYOND passing lists (e.g. SE and UI) by-ref instead of the assumed by-val.

This commit adds dna.Clone() and (UI|SE).Copy() where needed.  These should be used where DNA or SE/UI lists are COPIED, otherwise changes made in the reference will affect the real strand.

This change also messes with the gene activation logic.

code/modules/organs/organ_external.dm

@@ -903,7 +903,7 @@ obj/item/weapon/organ/head/proc/transfer_identity(var/mob/living/carbon/human/H)
 	brainmob = new(src)
 	brainmob.name = H.real_name
 	brainmob.real_name = H.real_name
-	brainmob.dna = H.dna
+	brainmob.dna = H.dna.Clone()
 	if(H.mind)
 		H.mind.transfer_to(brainmob)
 	brainmob.container = src