Debugger: Bring Qt Creator to foreground if app interrupts

Change-Id: I07795f61b79cce9687d0ae2bff3cc19534ec08d6
Reviewed-by: hjk <qthjk@ovi.com>
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@nokia.com>

src/plugins/debugger/debuggerplugin.cpp

@@ -2100,6 +2100,7 @@ void DebuggerPluginPrivate::connectEngine(DebuggerEngine *engine)
     engine->watchHandler()->rebuildModel();
 
     mainWindow()->setEngineDebugLanguages(engine->languages());
+    mainWindow()->setCurrentEngine(engine);
 }
 
 static void changeFontSize(QWidget *widget, qreal size)