Add a new binding signal, "move_scroll", and use it to hook up

Add a new binding signal, "move_scroll", and use it to hook up

Sat Dec 14 14:19:16 2002  Owen Taylor  <otaylor@redhat.com>

        * gtk/gtkmenu.c: Add a new binding signal, "move_scroll",
        and use it to hook up Home/End/Page_Up/Page_Down keybindings.
        (#80484, Narayana Pattipati, Marius Andreiana)

        * gtk/gtkmenu.c (gtk_menu_scroll_item_visible): Fix some
        bugs in the computation of when an item is visible. (#99545)

        * gtk/gtkbindings.[ch] (_gtk_binding_signal_new) gtk/gtkmenushell.c:
        Move here, export privately.

        * gtk/gtkmenushell.c (_gtk_menu_shell_select_last): Export
        privately.

        * gtk/gtkmenushell.c (gtk_menu_shell_select_item): Don't
        select the item if it is already selected.