Export isAdvancedSearchText method on SQLCatalog instance.
Document SQLCatalog.isAdvancedSearchText in IQueryCatalog interface.
Add a test for new SQLCatalog.isAdvancedSearchText method.


git-svn-id: https://svn.erp5.org/repos/public/erp5/trunk@26785 20353a03-c40f-0410-a6d1-a30d3c3de9de