more useful debug, less debug

OpenRA.Game/Traits/Activities/Move.cs

@@ -120,6 +120,7 @@ namespace OpenRA.Traits.Activities
 				self.ActorID, string.Join(" ", path.Select(a => a.ToString()).ToArray()));
 
 			mobile.PathHash = HashList(path);
+			Log.Write("debug", "EvalPathHash #{0} {1}", mobile.PathHash);
 
 			return path;
 		}

OpenRA.Game/Traits/Mobile.cs

@@ -68,6 +68,9 @@ namespace OpenRA.Traits
 			get { return __facing; }
 			set
 			{
+				if (__facing == value)
+					return;		// not interesting unless it changes 
+
 				__facing = value; 
 				Log.Write("debug", "#{0} set Facing={1}", self.ActorID, value);
 				Log.Write("debug", "{0}", new StackTrace());