move deep effective permissions aggregation to first time use and not on changes. There flag it is need with InvalidateDeepEffectivePerms(). Add config options PropagateGroupShareOutwards and PropagateAnyOneOutwards

OpenSim/Region/Framework/Scenes/SceneGraph.cs

@@ -343,7 +343,7 @@ namespace OpenSim.Region.Framework.Scenes
                 sceneObject.ForceInventoryPersistence();
                 sceneObject.HasGroupChanged = true;
             }
-            sceneObject.AggregateDeepPerms();
+            sceneObject.InvalidateDeepEffectivePerms();
             return ret;
         }