Decouple impl->current_folder from the selection in the folder tree. This

Decouple impl->current_folder from the selection in the folder tree. This

2003-12-01  Federico Mena Quintero  <federico@ximian.com>

	Decouple impl->current_folder from the selection in the folder
	tree.  This is so that going to /home/federico/.foo (e.g. from a
	bookmark) will work even if show_hidden == FALSE.  The folder tree
	needs to be fixed in this case to show such folders explicitly.

	* gtk/gtkfilechooserdefault.c
	(gtk_file_chooser_default_set_current_folder): When changing
	folders, do the entry and list model work here, instead of
	tree_selection_changed().
	(struct _GtkFileChooserDefault): Added a changing_folder flag
	again, dum de dum.
	(tree_selection_changed): Use _gtk_file_chooser_set_current_folder_path().