-Committing Zelack's fix for retrovirus and committing his work on converting checking names to checking types when playing ambient sounds.

-Committing SuperSayu's fix for allowing robots to quickly empty items that they carry.

git-svn-id: http://tgstation13.googlecode.com/svn/trunk@5148 316c924e-a436-60f5-8080-3fe189b3f50e

code/datums/diseases/retrovirus.dm

@@ -19,6 +19,7 @@
 		agent = "Virus class [pick("A","B","C","D","E","F")][pick("A","B","C","D","E","F")]-[rand(50,300)]"
 		if(prob(40))
 			cure_id = list("ryetalyn")
+			cure_list = list("ryetalyn")
 		else
 			restcure = 1