user/mesa: subpackage 'mesa-dri' is no longer provided
Commit 8ef7531c caused the unavailability of mesa-dri
package (by name), instead offering mesa-dri-classic
and mesa-dri-gallium
.
This affects (at least?):
user/xf86-video-ati
user/xf86-video-intel
user/xf86-video-nouveau