DERBY-3155: Make the INSERT column list optional in the WHEN NOT MATCHED clause of a MERGE statement provided that the number of values in the VALUES subclause equals the number of columns in the target table; commit derby-3155-12-aa-canOmitInsertColumnList.diff.

git-svn-id: https://svn.apache.org/repos/asf/db/derby/code/trunk@1558871 13f79535-47bb-0310-9956-ffa450edef68