* _set.* accessors to reindex the object
  * set.* category accessors to reindex the object several times
* Remove old/unused code in ERP5Type/Accessor
* Some optimisations in ERP5Type.Accessor.List

git-svn-id: https://svn.erp5.org/repos/public/erp5/trunk@26781 20353a03-c40f-0410-a6d1-a30d3c3de9de