This removes the need of "predicate.uid != 0" trick to force the table
mapping, and therefore removes one warning from catalog; there is still a
warning because 'from_expression', but this one would be harder to remove.


git-svn-id: https://svn.erp5.org/repos/public/erp5/trunk@34897 20353a03-c40f-0410-a6d1-a30d3c3de9de