Move ListConnInfo to WinVNC directory

It is functionality specific to WinVNC, so move the code there
to make things more clear.
diff --git a/win/rfb_win32/SocketManager.h b/win/rfb_win32/SocketManager.h
index c3c8faf..e5ca02e 100644
--- a/win/rfb_win32/SocketManager.h
+++ b/win/rfb_win32/SocketManager.h
@@ -65,6 +65,9 @@
       // the SocketServer.
       void addSocket(network::Socket* sock_, network::SocketServer* srvr, bool outgoing=true);
 
+      bool getDisable(network::SocketServer* srvr);
+      void setDisable(network::SocketServer* srvr, bool disable);
+
     protected:
       virtual int checkTimeouts();
       virtual void processEvent(HANDLE event);
@@ -78,6 +81,7 @@
         network::SocketListener* sock;
         network::SocketServer* server;
         AddressChangeNotifier* notifier;
+        bool disable;
       };
       std::map<HANDLE, ListenInfo> listeners;
       std::map<HANDLE, ConnInfo> connections;