initial import of xf86-video-ati-7.8.0

initial import of xf86-video-ati-6.14.6

initial import of xf86-video-ati-7.8.0

initial import of xf86-video-ati-7.7.0

initial import of xf86-video-ati 7.5.0 sources, into a new subdir as
this only has a chance of working on systems with KMS -- -7 on x86
only, so we need to keep the 6.x around for everyone else.