multiple X servers

[Wojciech Puchar]

can two (or more) X servers be run on one machine with machine with such 
config:

- 2 GFX cards, say one intel embedded in CPU, other addon.
- 2 keyboards
- 2 mice

Not with Xinerama, but 2 separate ones, first using first keyboard and 
first mouse, other using second keyboard and second mouse.

i did this long time ago under NetBSD but X changed so much (as well as 
GFX hardware) that this patches are now irrevelant.