Fix for hanging on "Connecting to region".. caused by packets being processed before the presence has bound to receive events. Fixed this by adding packets to a queue and then processing them when the presence is ready.

OpenSim/Framework/IClientAPI.cs

@@ -1112,6 +1112,7 @@ namespace OpenSim.Framework
         void SetDebugPacketLevel(int newDebug);
 
         void InPacket(object NewPack);
+        void ProcessPendingPackets();
         void ProcessInPacket(Packet NewPack);
         void Close();
         void Close(bool sendStop);