aqhome: implemented IPC client, fixed some bugs.

sending a PING request and retrieving the PONG response works now.

aqhome/msg/endpointmgr.h

@@ -18,10 +18,13 @@
 
 AQHOME_API GWEN_MSG_ENDPOINT_MGR *AQH_MsgEndpointMgr_new(uint8_t busAddr);
 
+AQHOME_API uint8_t AQH_MsgEndpointMgr_GetBusAddr(GWEN_MSG_ENDPOINT_MGR *emgr);
+
 AQHOME_API void AQH_MsgEndpointMgr_DistributeMsgFromNodeEndpoint(GWEN_MSG_ENDPOINT_MGR *emgr,
                                                                  GWEN_MSG_ENDPOINT *srcEp,
                                                                  const GWEN_MSG *msg,
-                                                                 int groupId);
+                                                                 int groupId,
+                                                                 const char *wantedTypeName);