new method PIClientServer::Server::closeAll()

PISignals::releaseSignals()

libs/main/client_server/piclientserver_server.h

@@ -49,6 +49,8 @@ public:
 	void listen(PINetworkAddress addr);
 	void listenAll(ushort port) { listen({0, port}); }
 
+	void closeAll();
+
 	int getMaxClients() const { return max_clients; }
 	void setMaxClients(int new_max_clients);
 	int clientsCount() const;