More JDBC functionality

Many additional JDBC methods have been implemented:

All the remainging Connection methods.

Most Statement methods (except batch methods).

Many in Resultset: isBeforeFirst, isAfterLast, isFirst, isLast, beforeFirst, afterLast, first, last, moveToInsertRow, moveToCurrentRow, absolute, relative, previous, get+set FetchDirection, get+set FetchSize, getType, getConcurrency, rowUpdated, rowInserted, rowDeleted, insertRow, updateRow, deleteRow, refreshRow, cancelRowUpdates. Most of these methods are just throwing an exception as the functionality is not available in many databases. However, the Javadocs are now there :)

Implementation of CallableStatement has started.

Oracle 9i is now added to the tests; Oracle 8i works now also with the Oracle 9i driver.