Allow tests to run despite custom message patterns.

With QT_MESSAGE_PATTERN some tests would not run without explanation.

Change-Id: I68a9eda08fe56508ffaaef209a1f236621aa932e
Reviewed-by: Gabriel de Dietrich <gabriel.dedietrich@digia.com>

tests/auto/qml/debugger/shared/debugutil.cpp

@@ -183,7 +183,7 @@ void QQmlDebugProcess::processAppOutput()
         const QString line = m_outputBuffer.left(nlIndex);
         m_outputBuffer = m_outputBuffer.right(m_outputBuffer.size() - nlIndex - 1);
 
-        if (line.startsWith("QML Debugger:")) {
+        if (line.contains("QML Debugger:")) {
             if (line.contains("Waiting for connection ")) {
                 m_timer.stop();
                 m_started = true;