Re-scale tests so each test takes about 1 second

git-svn-id: http://h2database.googlecode.com/svn/trunk@5600 e6896862-9d19-0410-bfb3-e9fa5d50e656
Documentation / update performance results.

git-svn-id: http://h2database.googlecode.com/svn/trunk@5601 e6896862-9d19-0410-bfb3-e9fa5d50e656
Prepare beta release (possibly not today, but this weekend)

git-svn-id: http://h2database.googlecode.com/svn/trunk@5602 e6896862-9d19-0410-bfb3-e9fa5d50e656
Avoid deadlock in an emergency close

git-svn-id: http://h2database.googlecode.com/svn/trunk@5603 e6896862-9d19-0410-bfb3-e9fa5d50e656