merge xf86-video-ati 19.1.0, xf86-video-amdgpu 19.1.0,
xf86-video-geode 2.11.20, and xf86-video-s3 0.7.0.

merge xf86-video-s3 0.6.5, xf86-video-s3virge 1.10.6, xf86-video-savage 2.3.6,
xf86-video-siliconmotion 1.7.7, xf86-video-sis 0.10.7.

Do better error checking around libpciaccess, like the intel driver does.
This makes the driver working again after the last Xorg update.

Although this doesn't really fix the real issue, but makes the driver more
robust, thus it reports the error in the logfile instead of dumping core.

This should go to upstream.

Import xf86-video-s3-0.6.1 from X.org

initial import of xf86-video-s3-0.5.0