add a linefeed to more clearly separate performance testing-results from other results

git-svn-id: http://h2database.googlecode.com/svn/trunk@5076 e6896862-9d19-0410-bfb3-e9fa5d50e656
- only expose the top 100 results in the query statistics table
- fix an occasional error in the test-case

git-svn-id: http://h2database.googlecode.com/svn/trunk@5077 e6896862-9d19-0410-bfb3-e9fa5d50e656