Fri Apr 24 01:29:04 1998  Tim Janik  <timj@gtk.org>

        * gtk/gtkaccelerator.h (struct _GtkAcceleratorTable): changed ref_count
                field to be of type guint.
                        * gtk/gtkaccelerator.c (gtk_accelerator_table_unref): added check for
                                ref_count>0;
                                        (gtk_accelerator_table_install): keep a per object list of accelerator
                                                tables that refer to this object.
                                                        (gtk_accelerator_table_remove): remove the accelerator table from the
                                                                per object list.
                                                                        (gtk_accelerator_table_clean): warn if there are any object references
                                                                                left in ...