- update to 3.0 prerelease 2.99.902
- switch to SNA as default acceleration method, i.e. taking the new
upstream default

- Update to version 2.21.15:
Some build fixes for the BSDs and alternate compiler, and conflicting
configure options and a critcial fix for some PRIME setups.
+ Don't fail to configure if DRI1 is not available and the user asks
for both DRI and KMS-only [Regression from 2.21.14]
+ Lots of miscellaneous fixes for older gcc, other compilers and BSD.
+ Initial framework support for hosted X.
+ Improve transition from fbcon to X with multiple outputs and extended
desktops.
+ Ensure the framebuffer exists before checking it against the CRTC
constraints.
https://bugs.launchpad.net/ubuntu/+source/xorg-server/+bug/121234
[Regression from 2.21.10]
+ Add RGB overlay support for Ironlake and later.
+ Don't release the overlay buffer too early, i.e. before the client
disables the Xv image.
+ Tweak the ring switching logic to reduce use of semaphores on
Sandybridge and later - a delicate balancing act between trying to
use the faster engine for the task and preventing concurrent use of
multiple rings.
- Packaging changes:
+ Remove xf86-video-intel-copyfb.diff (patch1)
Remove this old and long disabled patch. We shipped at least 12.3
wihout it!