[gtkada] Patch: Link gtkada_gl.so.

[Emmanuel Briot]

> 
> Well, in my builds libgtkada_gl.so had lots of unresolved references to
> functions in the GTK family of libraries before I added that patch, but
> you guys seem to have made big changes to the build system so I guess
> I'll see how it works in the next release.


Hopefully before then. We are working on a way to put things up in a public
git repository, but that needs both corporate decisions and cleanup to remove
customer code that should of course stay private. So that takes time (and may
not even happen, I don't get to decide :-)

Emmanuel