add asyncCreateFolder and asyncRemoveFolder interfaces. (Use

* Evolution-Storage.idl: add asyncCreateFolder and
	asyncRemoveFolder interfaces. (Use Bonobo::Listener rather than
	creating a new listener interface.)

	* Evolution-LocalStorage.idl: Remove the
	Evolution::LocalStorageOpsListener interface, which wasn't being
	used.

	* evolution-storage.c (impl_Storage_async_create_folder,
	impl_Storage_async_remove_folder): implement by emitting signals
	on the EvolutionStorage object. Convert from
	EvolutionStorageResult to GNOME_Evolution_Storage_Result (blah!)
	(class_init): Set up the new "create_folder" and "remove_folder"
	signals.

	* e-corba-storage.c (async_create_folder, async_remove_folder):
	Implement, using the new Evolution::Storage IDL. Convert from
	GNOME_Evolution_Storage_Result to EStorageResult (blah!)

	* e-storage-set.c (e_storage_set_async_create_folder): Don't allow
	a NULL description (since it doesn't allow a NULL anythign else).

	* e-shell-folder-creation-dialog.c (dialog_clicked_cb): Pass ""
	rather than NULL for the description.

svn path=/trunk/; revision=8230

shell/e-shell-folder-creation-dialog.c

@@ -186,7 +186,7 @@ dialog_clicked_cb (GnomeDialog *dialog,
 	e_storage_set_async_create_folder (storage_set,
 					   path,
 					   folder_type,
-					   NULL, /* description */
+					   "", /* description */
 					   async_create_cb, dialog_data);
 }