Provide IStorageUndoable.

undoInfo comes from BaseStorage, which inherits it from UndoLogCompatible.

git-svn-id: https://svn.erp5.org/repos/neo/trunk@2513 71dcc9de-d417-0410-9af5-da40c76e7ee4

neo/client/Storage.py

@@ -51,6 +51,7 @@ class Storage(BaseStorage.BaseStorage,
         # - start & stop are not handled (raises if either is not None)
         # - transaction isolation is not done
         # ZODB.interfaces.IStorageIteration,
+        ZODB.interfaces.IStorageUndoable,
     )
 
     def __init__(self, master_nodes, name, connector=None, read_only=False,