Fixed issue 287, 290, 291

-Cutting/restoring cameras now leaves a print
-building certain overly-abused griff items leaves prints
-grenade launcher no longer shoots your face if you try to backpack it

Chameleon projector movement speed is now based on temperature
Added add_hiddenprint(mob) proc
it's like add_fingerprint but only adds to fingerprintshidden isn't that neat?

git-svn-id: http://tgstation13.googlecode.com/svn/trunk@2898 316c924e-a436-60f5-8080-3fe189b3f50e

code/game/objects/items/weapons/table_rack_parts.dm

@@ -18,7 +18,8 @@ RACK PARTS
 		del(src)
 
 /obj/item/weapon/table_parts/attack_self(mob/user as mob)
-	new /obj/structure/table( user.loc )
+	var/obj/structure/table/T = new /obj/structure/table( user.loc )
+	T.add_fingerprint(usr)
 	del(src)
 	return