* Adding the very bare minimum for the client to register user as having the group OpenSimulator Tester. This allows us to start examining and implementing the vary many unhandled group packets.

OpenSim/Framework/IClientAPI.cs

@@ -973,6 +973,9 @@ namespace OpenSim.Framework
                                         LLVector3 CameraAtOffset, LLVector3 CameraEyeOffset, bool ForceMouseLook);
 
         void SendAdminResponse(LLUUID Token, uint AdminLevel);
+       
+        void SendGroupMembership(GroupData[] GroupMembership);
+        
 
         byte[] GetThrottlesPacked(float multiplier);