call built-in functions directly in GUI callbacks * main-window.cc: Include builtins.h instead of debug.h and variables.h. (main_window::save_workspace_callback): Call Fsave directly. (main_window::load_workspace_callback): Call Fload directly. (main_window::clear_workspace_callback):Call Fclear directly. (main_window::change_directory_callback): Call Fcd, not octave_env::chdir. (main_window::debug_continue_callback): Call Fdbcont directly. (main_window::debug_step_into_callback): Call Fdbstep directly. (main_window::debug_step_over_callback): Call Fdbstep directly. (main_window::debug_step_out_callback): Call Fdbstep directly. (main_window::debug_quit_callback): Call Fdbquit directly. (main_window::exit_callback): Call Fquit directly. * oct-obj.h (ovl): New functions. * debug.cc, debug.h (debug_step, debug_quit, debug_continue): Delete. * load-save.cc, load-save.h (load_workspace, save_workspace): Delete. * variables.cc, varaibles.h (clear_current_scope): Delete.

--- a/libinterp/interpfcn/debug.h
+++ b/libinterp/interpfcn/debug.h
@@ -131,10 +131,4 @@
 
 extern std::string get_file_line (const std::string& fname, size_t line);
 
-extern void OCTINTERP_API debug_continue (void);
-
-extern void OCTINTERP_API debug_step (const std::string& what = std::string ());
-
-extern void OCTINTERP_API debug_quit (void);
-
 #endif