Derby-4586: Add compatibility tests to explore behavior differences between Derby and other DBMS implementations

[Eranda Sooriyabandara]

Hi all,
Since the issue "Add compatibility tests to explore behavior differences
between Derby and other DBMS implementations" was listed under the last year
GSoC project ideas and not accepted, I would like to work on this issue, if
you are willing to list this under this year Apache Derby GSoC projects.
thanks
Eranda