when building +quartz +no_x11 -x11

[Ryan Schmidt]

On Jan 28, 2012, at 12:10, Jeremy Lavergne wrote:

> These two other ports likely need variants added to them since the build results link differently based on what was available at build time.
> 
> Thank rev-ugprade for finding them ;-)
> 
>     py27-cairo @1.8.10 
>     py27-gtk @2.22.0 

We should probably use subports for x11 vs quartz versions, instead of continuing to implement this as variants.