DERBY-3155: Point matching refinement clauses into the row returned by the driving left join of the MERGE statement; commit derby-3155-27-aa-adjustMatchingRefinements.diff.

git-svn-id: https://svn.apache.org/repos/asf/db/derby/code/trunk@1569521 13f79535-47bb-0310-9956-ffa450edef68