Xserver again

Hi! all,

I am enjoying to browse the Web by firefox. I looks like S3 864 works fine
with 8bpp.

  ftp://ftp.netbsd.org/pub/NetBSD/misc/kiyohara/xserver/prep/
  ftp://ftp.netbsd.org/pub/NetBSD/misc/kiyohara/xserver/prep/README

  patchs:
    ftp://ftp.netbsd.org/pub/NetBSD/misc/kiyohara/xserver/


I will post send-pr.  
Thanks,
--
kiyohara