more xf86RamDac.h vs xf86Cursor.h.

clean up debugging code, while there:
- use a fake framebuffer like newport does to hide software rendering
artifacts
- only map the framebuffer when debugging, and actually unmap it too

make this compile in the New Order Of Things

clip MTE-drawn rectangles by hand, now pwm looks right again

implement pattern fills

Implement image downloads, now KDE's window minimize animation doesn't leave
artifacts anymore. While there, allow commands to queue up where appropriate,
this gives a slight speedup in anti-aliased text rendering ( about 10% on my
200MHz/1MB O2 ) and likely in other operations as well.

Now this driver actually works.

Driver for the rendering engine found in SGI's O2 workstations
Not adapted to Xorg yet, just copied from xsrc/xfree