Locked frame times; SAM, GUN, AGUN work again.

- all frames are 40ms long. (except something in the sidebar, which should really be PlayFetchIndex anyway)
    - SAM, GUN, and AGUN no longer crash the game when built. (Turreted used Mobile, which those buildings don't have)

OpenRa.Game/Traits/RenderSimple.cs

@@ -18,9 +18,9 @@ namespace OpenRa.Game.Traits
 
 		public abstract IEnumerable<Pair<Sprite, float2>> Render(Actor self);
 
-		public virtual void Tick(Actor self, Game game, int dt)
+		public virtual void Tick(Actor self, Game game)
 		{
-			anim.Tick(dt);
+			anim.Tick();
 		}
 	}
 }