Hello!

X.org recently consolidated the various -proto packages (xproto,
xf86driproto, etc) into a single "xorgproto" package:
<https://lists.x.org/archives/xorg-announce/2018-February/002835.html>.

I'd like to push the attached patch to 'master' and use it for any new
packages, and replace xproto and friends in the next rebuild cycle.

I've tried building a few packages with this and it seems to work.  WDYT?