Added documentation and renamed method and fields, to fix the problem of the H2SpeedTest

git-svn-id: http://h2database.googlecode.com/svn/trunk@5025 e6896862-9d19-0410-bfb3-e9fa5d50e656
To fix the problem of the H2SpeedTest: added test case (disabled)

git-svn-id: http://h2database.googlecode.com/svn/trunk@5026 e6896862-9d19-0410-bfb3-e9fa5d50e656