update comments

git-svn-id: http://h2database.googlecode.com/svn/trunk@5800 e6896862-9d19-0410-bfb3-e9fa5d50e656
improve some method names, and make the call to convert ValueArray to a SearchRow just pass in a ValueArray, since it makes the call sites easier to read

git-svn-id: http://h2database.googlecode.com/svn/trunk@5801 e6896862-9d19-0410-bfb3-e9fa5d50e656
close some streams

git-svn-id: http://h2database.googlecode.com/svn/trunk@5802 e6896862-9d19-0410-bfb3-e9fa5d50e656