Tests

git-svn-id: http://h2database.googlecode.com/svn/trunk@5341 e6896862-9d19-0410-bfb3-e9fa5d50e656
Bugfix (repeated changes to the same entry)

git-svn-id: http://h2database.googlecode.com/svn/trunk@5342 e6896862-9d19-0410-bfb3-e9fa5d50e656