- disable build of backlight-helper for now; just too much trouble
with policykit; and as long as there are GPUs considered supported
on our distribution without a proper KMS driver it's useless having
this anyway ...

- specfile: remove URL from source ...

- Update to 3.0 prerelease 2.99.911:
Hans de Geode has been working on making the Xserver work without
privileges under the supervision of systemd/logind. This necessitated a
few new features for us: server fds (where we are passed which fd to use
to talk to our device by the Xserver who may in turn receive it from
logind or other host) and a small backlight helper so that we can continue
to provide a RandR backlight property when running without root privileges.
+ Flush when changing blend modes on Ironlake, or else single glyphs
are sometimes rendered incorrectly
Regression from 2.20.15
https://bugs.freedesktop.org/show_bug.cgi?id=74882
+ Fix pixmap offsets for pixman fallbacks onto Composite redirected
windows
https://bugs.freedesktop.org/show_bug.cgi?id=73811
+ Fix blending onto 8-bit destinations, typically used for generating
masks in complex Render operations, on gen2
https://bugs.freedesktop.org/show_bug.cgi?id=75818
+ Handle failure to create DRI bo more carefully. For example on gen3,
the DDX supports pixmaps that are much, much larger than OpenGL can
use and do not support the tiling modes that we request for OpenGL.
https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-intel/+bug/1289049
+ Fix a bookkeeping bug with proxy buffers that are marked active but
not actually inserted into a request (so they end up permanently