HPCC-9550 Control:getQueryXrefInfo not showing super keys

Pass information about superfile status when resolving files via
package.

Remove  optimization for single-subfile case.

Signed-off-by: Richard Chapman <rchapman@hpccsystems.com>
Merge pull request #4543 from richardkchapman/roxie-superkey-report

HPCC-9550 Control:getQueryXrefInfo not showing super keys

Reviewed-by: Gavin Halliday <ghalliday@hpccsystems.com>