Sun Mar 14 19:26:48 2004  Owen Taylor  <otaylor@redhat.com>

        #136672, reported by Christian Persch; fixes based
        on a patch by Soeren Sandmann.

        * gtk/gtkmenu.c: Change the handling of mixed gridded
        and non-gridded menu items; the old method was causing
        major performance problems even with the "avoid relayout
        on destruction" hack put in recently.

        Now we first lay out the gridded items and then put the
        non-gridded items into empty rows / after the gridded items.
        Layout is done in a central menu_shell_ensure_layout(). Also
        avoid emitting property notifications when we initially
        insert or attach items.

        * gtk/gtkmenushell.[ch] gtk/gtkmenu.c: Stop setting the
        unused menu_shell->menu_flag, and document it as unused
        in the header.

        * tests/testactions.c: Add a test of creating/removing
        lots of items.

        * test/testgtk.c: Add some more cruft to the menu test.