Follow actual undoLog API.

The documentation of this API is innacurate, as all parameters are expected
to have default values in ZODB unit tests.

git-svn-id: https://svn.erp5.org/repos/neo/trunk@1821 71dcc9de-d417-0410-9af5-da40c76e7ee4

neo/client/Storage.py

@@ -102,7 +102,7 @@ class Storage(BaseStorage.BaseStorage,
 
 
     @check_read_only
-    def undoLog(self, first, last, filter=None):
+    def undoLog(self, first=0, last=-20, filter=None):
         return self.app.undoLog(first, last, filter)
 
     def supportsUndo(self):