Okay, this is a pretty big revision!

Viruses:
     The virus system was COMPLETELY reworked.

     Good news, Virologists! This means people can now be infected by multiple viruses at once. Some of the virus-spreading protocols were tweaked to support this change, and as a result, they are now considerably more infectious. I also changed some background reagent variables to better support DNA, blood type, and virus combination.


Turrets:
     Fixed some lingering bugs that would bog down the global event processor.


Changelings:
     People turned into "husks" after being drained of their DNA by changelings can no longer be cloned.


Miscellaneous:
     I tweaked a LOT of mob code. This shouldn't have any noticeable impact on anything, but was required in order support the virus overhaul.



git-svn-id: http://tgstation13.googlecode.com/svn/trunk@1753 316c924e-a436-60f5-8080-3fe189b3f50e

code/modules/mob/transform_procs.dm

@@ -30,10 +30,11 @@
 	//O.dna.struc_enzymes = "0983E840344C39F4B059D5145FC5785DC6406A4BB8"
 	O.dna.struc_enzymes = "[copytext(O.dna.struc_enzymes,1,1+3*13)]BB8"
 	O.loc = loc
-	O.virus = virus
-	virus = null
-	if (O.virus)
-		O.virus.affected_mob = O
+	O.viruses = viruses
+	viruses = list()
+	for(var/datum/disease/D in O.viruses)
+		D.affected_mob = O
+
 	if (client)
 		client.mob = O
 	if(mind)