Add support of NuoDB database as repository database

I am a satisfied user XWiki, but I carried on porting XWiki nuodb (jdbc
driver exists). If you are a developer, Who is able to do this, please
contact me, I can be a sponsor of this small activity (some EUR up to
70 for this small task).?

After successfull work, the code changes will be published to public xwiki
repository for all other users (open source, it's have to request, not
private development).

Testing capacity I can deliver for portation tests, license of NuoDB is
free for developers (www.nuodb.com). Platform: native linux 64 (Centos)

If you need another details, please specify.

PS: Some new features and changes of existing I have in long wishlist....
could be long term cooperation. Work off site, no on site needed (You
provide changes as source code package of xwiki, we test it in our
environment).