[gtkada] Support for Glade 2 XML format

[Arnaud Charlet]

> Ah, I thought you wanted to start tomorrow :-) In that case maybe it is
> OK if I send it by Friday so I can have a bit more time to go through
> the code and add comments. I'll try to get most done tonight, but I have
> about 15 articles to read by tomorrow as well so if I have two evenings
> it would be better for me.

Friday is fine.

> Another thing: The different missing procedures in GtkAda are they all
> missing or are some not needed because of Ada? I would like to help
> adding the missing functions/procedures (mostly it is just copy'n'past
> of code) but I'm a bit unsure if some are missing for a reason. At the
> moment I'll working on GtkLabel to add those there.

Usuually when they are listed explicitely, it simply means that the work
has not been done yet, and that contributions are definitely welcome.

You may also want to have a look at the file docs/2.2-missing.txt that gives
an overview of the things that are not bound.

Arno