* libnautilus-private/nautilus-bonobo-extensions.c:
(nautilus_bonobo_add_submenu): Allow submenus to have pixbufs.

* libnautilus-private/nautilus-bonobo-extensions.h: Add pixbuf argument
to prototype for nautilus_bonobo_add_submenu ()

* src/nautilus-window-menus.c:
(create_menu_item_from_node): Make reference to
nautilus_bonobo_add_submenu conform to new prototype.

* src/file-manager/fm-directory-view.c
(add_submenu): Make reference to nautilus_bonobo_add_submenu conform to
new prototype and remove FIXME.