Add machine_dependent_reorg2

[Hans-Peter Nilsson]

On Sun, 29 Jun 2003, Richard Henderson wrote:
> On Sat, Jun 28, 2003 at 01:04:46PM -0700, Geoff Keating wrote:
> > OK, how about teaching the scheduler to do this?
>
> AGAIN, not until you teach sched to replace dbr.

Since I've heard knowledgeable people equate those traits at
times, please allow me to add that not all dbr machines have
INSN_SCHEDULING.  (Though I guess a dummy scheduling description
could be automatically generated if it simplifies replacing
dbr.)

brgds, H-P