* Commit a variety of fixes to bugs discovered while trying to fix the NaN singularity.

* WebStatsModule doesn't crash on restart.   GodsModule doesn't crash when there is no Dialog Module.  LLUDPServer doesn't crash when the Operation was Aborted.  
* ODEPlugin does 'Almost NaN' sanity checks.
* ODEPlugin sacrifices NaN avatars to the NaN black hole to appease it and keep it from sucking the rest of the world in.

OpenSim/Region/ClientStack/LindenUDP/LLImageManager.cs

@@ -199,6 +199,16 @@ namespace OpenSim.Region.ClientStack.LindenUDP
             
             int numCollected = 0;
             //First of all make sure our packet queue isn't above our threshold 
+            if (m_client == null)
+                return;
+
+            if (m_client.PacketHandler == null)
+                return;
+
+            if (m_client.PacketHandler.PacketQueue == null)
+                return;
+
+
             if (m_client.PacketHandler.PacketQueue.TextureOutgoingPacketQueueCount < 200)
             {
                 

OpenSim/Region/ClientStack/LindenUDP/LLUDPServer.cs

@@ -378,6 +378,7 @@ namespace OpenSim.Region.ClientStack.LindenUDP
 
                     case SocketError.NetworkReset:
                     case SocketError.ConnectionReset:
+                    case SocketError.OperationAborted:
                         break;
 
                     default: