Add support for "Find Previous" as dictated by the GNOME HIG. A menu item

Add support for "Find Previous" as dictated by the GNOME HIG. A menu item

2006-04-20  Wouter Bolsterlee  <uws+gnome@xs4all.nl>

	* data/evince-ui.xml:
	* shell/ev-view.c: (ev_view_can_find_previous):
	* shell/ev-view.h:
	* shell/ev-window.c: (ev_window_update_actions),
	(ev_window_cmd_edit_find_previous):

	Add support for "Find Previous" as dictated by the GNOME HIG. A
	menu item is added and some glue code to make it all work is added
	to various files.