FreeBSD - Consolidate the Mesa ports, update to 17.0.4, and add Wayland option.

[Robert Burmeister]

FreeBSD 11.0 i386.

Re: FreeBSD - Consolidate the Mesa ports, update to 17.0.4, and add Wayland option.

Portupgrade has difficulty handling the port moves.

Could someone provide instructions in UPDATING?

> ===> Fetching all distfiles required by xorg-7.7_3 for building
> ** Package origin of 'libglesv2' has been changed: 'graphics/libglesv2' -> 
> 'graphics/mesa-libs'
> --->  Skipping 'graphics/mesa-libs' (libglesv2-17.0.3) because it has already done
> ** Package origin of 'gbm' has been changed: 'graphics/gbm' -> 
> 'graphics/mesa-libs'
> --->  Skipping 'graphics/mesa-libs' (gbm-17.0.3) because it has already done
> ** Package origin of 'libEGL' has been changed: 'graphics/libEGL' -> 
> 'graphics/mesa-libs'
> --->  Skipping 'graphics/mesa-libs' (libEGL-17.0.3) because it has already done
> ** Listing the failed packages (-:ignored / *:skipped / !:failed)
>     * graphics/mesa-libs (libGL-17.0.3)
>     * graphics/mesa-libs (libglesv2-17.0.3)
>     * graphics/mesa-libs (gbm-17.0.3)
>     * graphics/mesa-libs (libEGL-17.0.3)