Added routing support for virtual network to more of the handlers and fixed up a couple of typos from the previous changes.

Added ReadRange service handler so that trendlogs can be read.

bacnet-stack/demo/handler/s_ihave.c

@@ -77,14 +77,11 @@ void Send_I_Have(
     datalink_get_broadcast_address(&dest);
     /* encode the NPDU portion of the packet */
     npdu_encode_npdu_data(&npdu_data, false, MESSAGE_PRIORITY_NORMAL);
-
 #if BAC_ROUTING
     pdu_len = npdu_encode_pdu(&Handler_Transmit_Buffer[0], &dest, &my_address, &npdu_data);
 #else
     pdu_len = npdu_encode_pdu(&Handler_Transmit_Buffer[0], &dest, NULL, &npdu_data);
 #endif
-
-    pdu_len = npdu_encode_pdu(&Handler_Transmit_Buffer[0], &dest, NULL, &npdu_data);
     /* encode the APDU portion of the packet */
     data.device_id.type = OBJECT_DEVICE;
     data.device_id.instance = device_id;