Fix #132327.

Fix #132327.

2004-02-06  Federico Mena Quintero  <federico@ximian.com>

	Fix #132327.

	* gtk/gtkfilesystemunix.c (struct _GtkFileSystemUnix): Add a
	folder_hash field to keep a list of live folder objects.
	(gtk_file_system_unix_init): Create the folder_hash.
	(gtk_file_system_unix_finalize): Destroy the folder_hash.
	(gtk_file_system_unix_get_folder): Ref and return an existing
	folder if we have it around, otherwise return a new folder object.
	(struct _GtkFileFolderUnix): Add a field for the parent file system.
	(gtk_file_folder_unix_finalize): Remove the folder from the file
	system's hash table.
	(gtk_file_system_unix_create_folder):  Emit "files-added" on the
	newly-created folder's parent.  Fixes #132327.