DERBY-3155: Allow for row location columns in the result column list of base tables; tests passed cleanly for me on derby-3155-16-aa-treatCurrentRowLocationNodeLikeBaseColumnNode.diff.

git-svn-id: https://svn.apache.org/repos/asf/db/derby/code/trunk@1560134 13f79535-47bb-0310-9956-ffa450edef68