Make __getattr__ find objects when the object id is given. Previous code would have returned an OOBTree object when the ID of the htree subtree was given, and both are internale-only values.


git-svn-id: https://svn.erp5.org/repos/public/erp5/trunk@16605 20353a03-c40f-0410-a6d1-a30d3c3de9de