MVStore: deal with the case that data was moved to a new chunk (work in progress)

git-svn-id: http://h2database.googlecode.com/svn/trunk@5822 e6896862-9d19-0410-bfb3-e9fa5d50e656
MVStore: deal with the case that data was moved to a new chunk (work in progress)

git-svn-id: http://h2database.googlecode.com/svn/trunk@5823 e6896862-9d19-0410-bfb3-e9fa5d50e656