Make default value None. Previous code had a bad behaviour if the default value was a long (it should be valid, but isinstance(long, int) is obviously False, so default fell back to "1"). Anyway, if default is an invalid value, ZSQLMethod will complain.


git-svn-id: https://svn.erp5.org/repos/public/erp5/trunk@16687 20353a03-c40f-0410-a6d1-a30d3c3de9de