allow to give base as a parameter

git-svn-id: https://svn.erp5.org/repos/public/erp5/trunk@5101 20353a03-c40f-0410-a6d1-a30d3c3de9de

product/ERP5Type/Accessor/Category.py

@@ -147,7 +147,7 @@ class DefaultGetter(Method):
                                                       spec=kw.get('spec',()),
                                                       filter=kw.get('filter', None),
                                                       portal_type=kw.get('portal_type',()),
-                                                      base=0, default=default)
+                                                      base=kw.get('base',0), default=default)
     psyco.bind(__call__)
 
 class ListGetter(Method):