and place the definition in <machine/types.h>. This can now be used
as a flag to indicate whether or not <machine/intr.h> can be included
to get the generic soft interrupt API.
Lots of the work was done by Adam Ciarcinsky.
Currently, this only supports CyberPPC boards by Phase 5. Blizzard PPC
expected later.
The kernel is useless but for demonstrating that it starts... especially
interupts, and most of MMU support, is not in yet. Builtin console works,
however, and you can look at the kernel startup messages.