Fixed bug 5313 (location bar gets partly inactive during
	auto-completion)

	This was a GTK bug involving event timing. The fix was to
	add a workaround in NautilusEntry.

	* libnautilus-extensions/nautilus-entry.c:
	(nautilus_entry_initialize_class): Wire up default handler
	for selection_clear_event.
	(nautilus_entry_selection_clear): Bail out without doing anything
	if we are still the selection owner.