fix compile warning.
Added write only and table name option and tests
Some eclipse settings
Added JdbcFileUtil class
added utility functions
buildfix
support read-only mode and change sessions.
removed the special /key file.
added diag tool. Fixed double read() InputStream. fixed dirty state of DarcTree.
format TreePrinter output more readable with fixed column size.
EOL fix
add a datasource to avoid NPE (after dialect detection).
some additional checks on table name configuration after merge.
support oracles nasty null/empty semantic for root directory.
EOL fix
Merge branch 'WIP'