DERBY-3155: Replace correlation names on the left side of the SET clauses in MERGE statements: commit derby-3155-14-aa-replaceCorrelationNamesOnLeftSideOfSETclauses.diff.

git-svn-id: https://svn.apache.org/repos/asf/db/derby/code/trunk@1559183 13f79535-47bb-0310-9956-ffa450edef68