Use PACKAGE_NAME in UPnP description

src/net.cpp

@@ -1440,7 +1440,7 @@ static void ThreadMapPort()
             }
         }
 
-        std::string strDesc = "Bitcoin " + FormatFullVersion();
+        std::string strDesc = PACKAGE_NAME " " + FormatFullVersion();
 
         do {
             r = UPNP_AddPortMapping(urls.controlURL, data.first.servicetype,