[DRE-maint] ruby-setup-rb.mk, and ftbses

[Arnaud Cornet]

> > webgen0.4, libdbus-ruby (in our svn) are those that I tested.
> 
> I did a rebuild of all packages in Debian yesterday, and both webgen0.4
> and libdbus-ruby built fine in an up-to-date sid chroot.

My bad, it seem I had an unrelease ruby-pkg-tools installed and I had
forgotten about that. The buggy ruby-pkg-tools thankfully never hit sid.
Sorry for the noise.
-- 
Arnaud Cornet