some provider actions providing nothing where not properly

removed (like portal_undo). this patch fix migration of very
old sites

git-svn-id: https://svn.erp5.org/repos/public/erp5/trunk@38551 20353a03-c40f-0410-a6d1-a30d3c3de9de

product/ERP5Type/patches/ActionsTool.py

@@ -48,6 +48,10 @@ def migrateNonProviders(portal_actions):
       txn.note(msg)
       portal_actions._actions += provider._actions
       del provider._actions
+    if (getattr(provider, 'listActionInfos', None) is None and
+        getattr(provider, '_listActionInfos', None) is None and
+        getattr(provider, 'getActionListFor', None) is None and
+        not(IActionProvider_providedBy(provider))):
       action_providers.remove(provider_name)
   portal_actions.action_providers = tuple(action_providers)