DERBY-6652: Disable the use of views as the source data sets of MERGE statements; tests passed cleanly for me on derby-6652-01-aa-disableSourceViews.diff.

git-svn-id: https://svn.apache.org/repos/asf/db/derby/code/trunk@1609450 13f79535-47bb-0310-9956-ffa450edef68