Get rid of the Locker in TestResultModel...

...use signals and slots instead.

Additionally re-use the existing item that is displaying the
"Entering Test Function..." information.

Change-Id: Ibedac01ced9e987d542aa4dc878588fbec84d585
Reviewed-by: Tim Jenssen <tim.jenssen@theqtcompany.com>

plugins/autotest/autotestplugin.cpp

@@ -51,6 +51,8 @@ static AutotestPlugin *m_instance = 0;
 AutotestPlugin::AutotestPlugin()
     : m_settings(new TestSettings)
 {
+    // needed to be used in QueuedConnection connects
+    qRegisterMetaType<TestResult>();
     // Create your members
     m_instance = this;
 }