DERBY-6595: Fix sequence cache-flushing problem during trigger re-compilation: tests passed cleanly on derby-6595-01-aa-dontClearSequenceCache.diff.

backported change #1600729 from trunk to 10.10 branch.



git-svn-id: https://svn.apache.org/repos/asf/db/derby/code/branches/10.10@1631242 13f79535-47bb-0310-9956-ffa450edef68