2003-10-28  Mark McLoughlin  <mark@skynet.ie>

        * gtk/gtkexpander.c:
        (gtk_expander_class_init): hook up the destroy handler.
        (gtk_expander_destroy), (gtk_expander_unrealize):
        remove the expand/collapse timeout on destroy instead
        of unrealize to avoid leaving the expander in a inconsistent
        state when unrealizing during animation.
        (gtk_expander_start_animation): remove realized check.
        (gtk_expander_set_expanded): if the widget isn't realized,
        expand immediately.