Avoid throwing runtime exceptions; trace message calls.

git-svn-id: http://h2database.googlecode.com/svn/trunk@4915 e6896862-9d19-0410-bfb3-e9fa5d50e656
Remove (now) unneeded code.

git-svn-id: http://h2database.googlecode.com/svn/trunk@4916 e6896862-9d19-0410-bfb3-e9fa5d50e656
Geometry: support client/server protocol; improved memory usage estimation.

git-svn-id: http://h2database.googlecode.com/svn/trunk@4917 e6896862-9d19-0410-bfb3-e9fa5d50e656
Documentation.

git-svn-id: http://h2database.googlecode.com/svn/trunk@4918 e6896862-9d19-0410-bfb3-e9fa5d50e656