Bug#535772: Fixed upstream

[koos vriezen <koos.vriezen@gmail.com>]

Downloaded http://cgit.freedesktop.org/xorg/driver/xf86-video-intel/snapshot/xf86-video-intel-master.tar.bz2
and applied http://ftp.de.debian.org/debian/pool/main/x/xserver-xorg-video-intel/xserver-xorg-video-intel_2.7.99.901-2.diff.gz
and the crash is gone.  Debian diff had some pre-applied conflicts in
xvmc area, that I removed from the diff.

I don't have the time to bisect this, looking at
http://cgit.freedesktop.org/xorg/driver/xf86-video-intel/log/, there
are a few fixes in there.
(my first guess, but who cares, is
http://cgit.freedesktop.org/xorg/driver/xf86-video-intel/commit/?id=cdbf84f20295c8a78624318aa6fdfff3f5c8ce27
)