Documentation

git-svn-id: http://h2database.googlecode.com/svn/trunk@5230 e6896862-9d19-0410-bfb3-e9fa5d50e656
Improved code coverage

git-svn-id: http://h2database.googlecode.com/svn/trunk@5231 e6896862-9d19-0410-bfb3-e9fa5d50e656