zero out SP velocity before calling SP.Teleport(), as the client expects (though this is also effectively done by physics at the moment)

OpenSim/Region/CoreModules/Framework/EntityTransfer/EntityTransferModule.cs

@@ -215,6 +215,7 @@ namespace OpenSim.Region.CoreModules.Framework.EntityTransfer
                     sp.ControllingClient.SendTeleportStart(teleportFlags);
 
                     sp.ControllingClient.SendLocalTeleport(position, lookAt, teleportFlags);
+                    sp.Velocity = Vector3.Zero;
                     sp.Teleport(position);
 
                     foreach (SceneObjectGroup grp in sp.GetAttachments())