HPCC-9764 Generate JFreordered for standard joins

Signed-off-by: Gavin Halliday <gavin.halliday@lexisnexis.com>
Merge pull request #4676 from ghalliday/issue9764

HPCC-9764 Generate JFreordered for standard joins

Reviewed-By: Richard Chapman <rchapman@hpccsystems.com>