MVStore: temporary output used for bugfixing

git-svn-id: http://h2database.googlecode.com/svn/trunk@5194 e6896862-9d19-0410-bfb3-e9fa5d50e656
MVStore: convert an empty root node to a leaf

git-svn-id: http://h2database.googlecode.com/svn/trunk@5195 e6896862-9d19-0410-bfb3-e9fa5d50e656
MVStore: convert an empty root node to a leaf

git-svn-id: http://h2database.googlecode.com/svn/trunk@5196 e6896862-9d19-0410-bfb3-e9fa5d50e656
document CSVREAD "null" option better

git-svn-id: http://h2database.googlecode.com/svn/trunk@5197 e6896862-9d19-0410-bfb3-e9fa5d50e656
first stage of generating some architecture documentation

git-svn-id: http://h2database.googlecode.com/svn/trunk@5198 e6896862-9d19-0410-bfb3-e9fa5d50e656