raiseToJump

[Stephen Weeks]

> > I tracked down some of those unhandled options; the translation from CPS
> > to SSA really has to do a trivial raiseToJump, to ensure that raises at
> > non-empty handler stacks are turned into the appropriate jump.  This isn't
> > currently going on (when I turn off all of the CPS simplification passes),
> > so removeUnused in SSA is removing what looks like unused blocks.
> 
> Checked in a fix for this; I'm off.  I'll look at the regressions again
> tomorrow.  This might have fixed a lot of them, particularly unhandled
> exceptions.

Great.  Thanks.  I thought I had put that in.