are not specified in an insert. Most of these changes are actually to
clean up the test suite to either specify defaults to avoid warnings,
or add the warnings to the results. Related to bug #5986.
* Fixed a problem with wrong query results for partially covering keys in ROR-index_merge
* ROR-intersection retrieval plan choice algorithm now uses less disk IO
- and properly processes clustered PK range scans
* Fixed several minor range optimizer problems
* Added more comments
* Code cleanup