upcoming release

[Matthew Fluet]

> > Could you try another profiled self compile and tell me how much time is in
> > the unknown world?
>
> 493.91 seconds of CPU time
> forward (C @ 0x85BA25C)       23.03%
> output_7                       9.85%
> GC_foreachPointerInObject (C)  8.00%
> toLiveness_1                   4.24%
> eq_0                           4.07%
> toString_31                    3.91%
> GC_foreachPointerInRange (C)   2.35%
> eq_2                           1.96%
> concat_0                       1.86%
> chooseRegister_1               1.41%
> utilized_0                     1.41%
> post_1                         1.41%
> x_17705                        1.21%

Steve, did you happen to -keep cps (and maybe -show-types true) on this?
At some point, I'd like to figure out which eq_?'s those correspond to
(I'm fairly certain that they are in the x86-codegen, because you seem to
prefer equals for the equality predicate name).  Also, that concat_0.  If
not, I'll try to remember to do so the next time I do a self-compile.