Eliminate race condition where many callers would check SOP.PhysicsActor != null then assume it was still not null in later code.

Another thread could come and turn off physics for a part (null PhysicsActor) at any point.
Had to turn off localCopy on warp3D CoreModules section in prebuild.xml since on current nant this copies all DLLs in bin/ which can be a very large number with compiled DLLs
No obvious reason for doing that copy - nothing else does it.

OpenSim/Region/Framework/Scenes/Scene.cs

@@ -642,10 +642,6 @@ namespace OpenSim.Region.Framework.Scenes
 
             #endregion Region Settings
 
-            MainConsole.Instance.Commands.AddCommand("Estates", false, "reload estate",
-                                          "reload estate",
-                                          "Reload the estate data", HandleReloadEstate);
-
             //Bind Storage Manager functions to some land manager functions for this scene
             EventManager.OnLandObjectAdded +=
                 new EventManager.LandObjectAdded(simDataService.StoreLandObject);