Debugger: Show QML Script Console only for QML debugging

Change-Id: Ibb0f03c77a84ee8682d44944e8a24fac54cb60fe
Reviewed-on: http://codereview.qt-project.org/5329
Reviewed-by: Qt Sanity Bot <qt_sanity_bot@ovi.com>
Reviewed-by: Kai Koehne <kai.koehne@nokia.com>

src/plugins/debugger/qml/qmlcppengine.h

@@ -87,6 +87,8 @@ public:
         const QString &expr, const QVariant &value);
 
     DebuggerEngine *cppEngine() const;
+    DebuggerEngine *qmlEngine() const;
+
     void handleRemoteSetupDone(int gdbServerPort, int qmlPort);
     void handleRemoteSetupFailed(const QString &message);