Fixed the toString() output a bit.

git-svn-id: svn+ssh://src.earth.threerings.net/vilya/trunk@52 c613c5cb-e716-0410-b11b-feb51c14d237

src/as/com/threerings/parlor/game/data/GameObject.as

@@ -254,7 +254,7 @@ public class GameObject extends PlaceObject
     override protected function whichBuf (buf :StringBuilder) :void
     {
         super.whichBuf(buf);
-        buf.append(players.join());
+        buf.append("(").append(players.join()).append(")");
         buf.append(":").append(state);
     }