2003-03-12  Alexander Larsson  <alexl@redhat.com>

	* libnautilus-private/nautilus-file-private.h:
	* libnautilus-private/nautilus-file.c: (finalize),
	(nautilus_file_invalidate_attributes_internal),
	(nautilus_file_is_thumbnailing),
	(nautilus_file_set_is_thumbnailing):
	* libnautilus-private/nautilus-file.h:
	Keep track of whether the file is being thumbnailed.
	If it is at finalization, remove from the thumbnail queue.

	* libnautilus-private/nautilus-icon-container.h:
	* libnautilus-private/nautilus-icon-container.c:
	(redo_layout_internal), (realize),
	(nautilus_icon_container_instance_init),
	(nautilus_icon_container_prioritize_thumbnailing),
	(nautilus_icon_container_prioritize_thumbnailing_for_visible_icons)
	, (handle_vadjustment_changed):
	Prioritize thumbnailing for icons visibile on the screen.

	* libnautilus-private/nautilus-icon-factory.c:
	(show_thumbnails_changed_callback):
	Remove all thumbnails from queue when thumbnails a...