CONJ-541 resultSet.relative() behavior is incorrect when crossing result set boundaries

[yrodiere]

This PR changes the behavior of resultSet.relative() when crossing result set boundaries in order to conform to the java.sql.ResultSet#relative javadoc.

One existing test, DriverTest#testResultSetPositions, had to be altered because it relied on an incorrect behavior (expected relative(-1) from the first row to not change the position).

[rusher]

Hi @yrodiere ,

Good contribution.

Similar to other open source projects, the MariaDB Foundation needs to have shared ownership of all code that is included in the MariaDB distribution. The easiest way to achieve this is by submitting your code under the BSD-new license. (The other alternative is to sign the code contribution agreement which can be found here: https://mariadb.com/kb/en/mariadb/mca/)

Please indicate in a comment below that you are contributing your new code of the whole pull request, including one or several files that are either new files or modified ones, under the BSD-new license or that you have filled out the contribution agreement and sent it.

Thanks,
diego

[yrodiere]

I am contributing my new code of the whole pull request, including one or several files that are either new files or modified ones, under the BSD-new license.

Thanks.