Unwind API for EH

[Jason Merrill]

>>>>> Eli Boling <eboling at inprise.com> writes:

 > I don't really like this, either.  The problem here is now the unwinder
 > is given the power to choose how to set up the processor for the landing
 > pad.  I'd rather that this be in the control of the language vendor,
 > since we're making a transfer of control to their code, under very
 > special circumstances - they know about their unwind data structures,
 > and the unwinder doesn't.

Good point.  I suppose it does make more sense to handle this in the
personality routine, since it is the part that coordinates with the
handler.

Jason