Improved mqttlog daemaon: persistent registered devices.

apps/aqhome-mqttlog/aqhome_mqtt_p.h

@@ -17,6 +17,7 @@
 
 #define AQHOME_MQTT_DEFAULT_PIDFILE           "/var/run/aqhome-mqtt.pid"
 #define AQHOME_MQTT_DEFAULT_DATADIR           "/var/lib/aqhome-mqtt"
+#define AQHOME_MQTT_DEFAULT_DEVICEFILE        "mqttlog/registereddevices.xml"
 
 #define AQHOME_MQTT_DEFAULT_BROKER_PORT       1899
 #define AQHOME_MQTT_DEFAULT_BROKER_CLIENTID   "mqtt"
@@ -35,6 +36,8 @@ struct AQHOME_MQTT {
 
   AQHMQTT_DEVICE_LIST *availableDeviceList;
   AQHMQTT_DEVICE_LIST *registeredDeviceList;
+
+  char *deviceFile;
 };