Debugger: Add "Reload Debugging Helpers" to Log Window context menu

Change-Id: I5059dbf73482236a677de8c004ab33aaef3d4cd6
Reviewed-by: hjk <qthjk@ovi.com>

src/plugins/debugger/debuggerengine.cpp

@@ -1469,6 +1469,10 @@ void DebuggerEngine::reloadFullStack()
 {
 }
 
+void DebuggerEngine::reloadDebuggingHelpers()
+{
+}
+
 void DebuggerEngine::addOptionPages(QList<Core::IOptionsPage*> *) const
 {
 }