2006-07-24  Martin Wehner  <martin.wehner@gmail.com>

	* configure.in:
	* libnautilus-extension/Makefile.am:
	Add extension versioning infrastructure and add nautilus-menu.[ch].

	* libnautilus-extension/nautilus-menu-item.[ch]:
	Add and handle a 'menu' property and add a function
	nautilus_menu_item_set_submenu.

	* libnautilus-extension/nautilus-menu.[ch]:
	New files implementing a submenu item.

	* src/file-manager/fm-directory-view.c: (add_extension_menu_items),
	(reset_extension_actions_menu):
	Add extension menu items recursively.

	* libnautilus-extension/nautilus-menu-provider.h:
	Update include.

	Extend extension API to support submenus. (#314579)

	Patch from Raffaele Sandrini  <rasa@gmx.ch>