[PATCH 0/2 xf86-video-intel] Two DRI3/Present bug fixes for UXA

[Keith Packard]

Here are a couple of small bug fixes which make DRI3/Present work
better with UXA.

 [PATCH 1/2] Do not clear pending kernel events on mode switch

This patch prevents GL-based compositing managers from wedging when
performing video mode setting. The problem was that DIX was never
receiving notification about page flips being completed when one was
pending across a mode switch.

 [PATCH 2/2] Correct BO allocation alignment

This patch makes UXA and Mesa agree about how buffers are allocated
for images. Without this, UXA was requiring larger padding, which
meant that converting some textures into pixmaps using DRI3 would
fail.

-keith