Fix page-label command line option. Bug #342070.

Fix page-label command line option. Bug #342070.

	* backend/ev-link-dest.c: (ev_link_dest_type_get_type),
	(ev_link_dest_get_page_label), (ev_link_dest_get_property),
	(ev_link_dest_set_property), (ev_link_dest_finalize),
	(ev_link_dest_class_init), (ev_link_dest_new_named),
	(ev_link_dest_new_page_label):
	* backend/ev-link-dest.h:
	* shell/ev-application.c: (ev_application_open_uri):
	* shell/ev-view.c: (goto_dest):
	* shell/ev-window.c:
	* shell/ev-window.h:

	Fix page-label command line option. Bug #342070.