New port: CRIS architecture

[Andrew Cagney]

Orjan Friberg wrote:
> 
> Andrew Cagney wrote:
> >
> > tm-cris.h:
> >         I'm trying to figure out why it is needed.
> >         The obvious problem is SOFTWARE_SINGLESTEP_P.
> >         I'll fix that.
> >
> 
> Great, I'll await that before resubmitting.
> 
> >         Beyond that one, what else is needed?  I'd
> >         like to see a second pure multi-arch target
> >         in GDB so will help where needed.
> 
> Is REGISTER_BYTES_OK eligible for multi-arching? Since it only controls
> the warning message about the g packet's size, I don't think I can argue
> in favour of that.

Eventually everything target related will be either changed to run-time
test or deleted.  So I can change it to the run-time test and then let
someone else delete it.

	Andrew