xvfb: add randr support (v2)

[Adam Jackson]

On Mon, 2015-06-08 at 22:14 +0000, Siim Põder wrote:
> Hi
> 
> This was sent to xorg-devel a few years ago. It still applies and still appears
> to work. I resending this because it affects me. Comments or application to the
> tree would be greatly appreciated :)
> 
> The motivation for getting this is chrome remote desktop that runs under Xvfb
> and wants to use RANDR to adjust screen size according to the remote desktop
> client screen size. Apparently there are other use cases as well, the bug
> mentions gnome-settings-daemon testing.

It's a start!  This can't resize to larger than you started, and it's
missing a way to specify more than one crtc or output.  But it's
certainly better than nothing, so:

Reviewed-by: Adam Jackson <ajax at redhat.com>

- ajax