Notify disconnect to debug server when inferiorshutdownrequested

Change-Id: I15bb1342f647362cb00e4b0d0453b663a2d3f637
Reviewed-on: http://codereview.qt.nokia.com/3095
Reviewed-by: Qt Sanity Bot <qt_sanity_bot@ovi.com>
Reviewed-by: Christiaan Janssen <christiaan.janssen@nokia.com>

src/plugins/debugger/qml/qscriptdebuggerclient.h

@@ -58,6 +58,7 @@ public:
 
     void continueInferior();
     void interruptInferior();
+    void shutdownInferior();
 
     void activateFrame(int index);