fail on gtk20 build

[David Banning]

> >       good idea to provide an overview of all packages installed on your
> >       system (e.g. an `ls /var/db/pkg`).
> > *** Error code 1
> 
> You need to make sure freetype2, fontconfig, and Xft are up-to-date (in
> that order), then reinstall pango.  I recommend installing
> sysutils/portupgrade, and using it to update all currently installed
> ports before adding new ones.

That did it. Thanks Joe.