Added debug events, debug mode detection and fixed compiling error. * main-window: Added new slots reacting on debug mode changes. * octave-event-listener: Extended interface to transmit debug mode changes. * octave-event: Added a lot of debug events. * octave-link: Added code to detect the change of the debug mode flag. * octave-qt-event-listener: Implemented new interface methods. * workspace-view.h: Added missing #include.

--- a/gui/src/main-window.h
+++ b/gui/src/main-window.h
@@ -91,6 +91,9 @@
   void change_current_working_directory (QString directory);
   void current_working_directory_up ();
 
+  void handle_entered_debug_mode ();
+  void handle_quit_debug_mode ();
+
 protected:
   void closeEvent (QCloseEvent * closeEvent);
   void read_settings ();