provide avatar name in log if an exception ends up at the top of an async packet processing stack

OpenSim/Region/ClientStack/LindenUDP/LLClientView.cs

@@ -651,8 +651,9 @@ namespace OpenSim.Region.ClientStack.LindenUDP
             catch (Exception e)
             {
                 // Make sure that we see any exception caused by the asynchronous operation.
-                m_log.Error(
-                    string.Format("[LLCLIENTVIEW]: Caught exception while processing {0}", packetObject.Pack), e);
+                m_log.ErrorFormat(
+                    "[LLCLIENTVIEW]: Caught exception while processing {0} for {1}, {2} {3}", 
+                    packetObject.Pack, Name, e.Message, e.StackTrace);
             }
         }