XMLRPC mod

Update FreqDisp when xmlrpc command main.set_frequency is
    received.  Frequency control enabled from either fldigi or
    external xmlrpc access program

src/misc/xmlrpc.cxx

@@ -742,6 +742,7 @@ void xmlrpc_set_qsy(long long rfc, long long fmid)
 		active_modem->set_freq((int)fmid);
 	wf->rfcarrier(rfc);
 	wf->movetocenter();
+	qsoFreqDisp->value(rfc);
 }
 
 class Main_set_freq : public xmlrpc_c::method