When an asset is uploaded (e.g. a mesh) set individual copy/move/transfer permissions, not PermissionMask.All

Setting PermissionMask.All will cause next permissions to replace current permissions when the object is rezzed, since bit 4 will be set.
This is not correct behaviour for a freshly uploaded mesh.  Freshly rezzed in-world prims also do not have bit 4 set (don't yet know exactly what this is).
Should resolve http://opensimulator.org/mantis/view.php?id=5651

OpenSim/Region/ClientStack/Linden/Caps/ObjectCaps/UploadObjectAssetModule.cs

@@ -339,7 +339,7 @@ namespace OpenSim.Region.ClientStack.Linden
                     m_scene.AddSceneObject(grp);
                     grp.AbsolutePosition = obj.Position;
                 }
-
+                
                 allparts[i] = grp;
             }