Disable GSS-SPNEGO when connecting as the underlying uLab libraries do not support it

clients/tde/src/app/remotemdi.cpp

@@ -424,6 +424,9 @@ void RemoteMDI::connectToServer() {
 		connect(m_rsvSvrSocket, TQT_SIGNAL(statusMessageUpdated(const TQString&)), this, TQT_SLOT(updateStatusBarMainMessage(const TQString&) ));
 	}
 	m_rsvSvrSocket->setServiceName("ulab");
+	TQStringList disallowedMechList;
+	disallowedMechList.append("GSS-SPNEGO");
+	m_rsvSvrSocket->setDisallowedMechanisms(disallowedMechList);
 	if (m_serverHost != "") {
 		m_rsvSvrSocket->setServerFQDN(m_serverHost);
 		m_rsvSvrSocket->connectToHost(m_serverHost, 4004);