Firebird - status update

[Bunth Tamás]

>> I believe Firebird3 now supports auto-increment columsn
>>   http://stackoverflow.com/questions/34553826/easiest-way-to-create-an-auto-increment-field-in-firebird-database
>
> I see that your latest gerrit revision takes that in account. Good! I
> should have some time this week-end to do a complete review.

Yes, thank you for the tip, Noel, that is certainly a better solution
as with triggers.

With my last path, I think it is ready to go, though it depends on the
previous "update to Firebird 3" patch, that's why it doesn't compile.