[vtkusers] Building VTK without OpenGL

[Ben Boeckel]

On Thu, Oct 22, 2015 at 11:05:31 -0400, Marcus D. Hanwell wrote:
> This did work when I added it, but I guess the dashboard that tested
> it was lost, and it was broken at some point. I agree with you that it
> should be removed (or fixed, and tested).

Is a dashboard which just builds with the None backend sufficient? Are
there any tests that would still run that are meaningful in only None
mode (looking for a way to save buildbot time here :) ).

If anyone makes an MR where a None backend works, I'll add a builder for
it.

--Ben