help with ati, and future DRM drivers.
- Add new "ati" kdrive driver. It has ancestry in the r128 driver from
andersca, but took a detour through being the WIP SiS 300 driver on the
way. It supports Radeons (tested on QD VIVO and 7500) and Rage 128.
Current limitations include that it requires depth 16 and that the
other Rage 128 PCI IDs aren't included yet.
the server seems to act as before. With RedirectSubwindows (root,
automatic), the server looks just like a regular X server. Now to go
rewrite the (currently lame) compositing manager to get some real
action on the screen.
Some of the fixes here are to make valgrind quiet with various ioctls used
by kdrive/linux.
Also fixed a bug where fbdev initialization was out of order in fbdev.c and
smi.c