* 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_...