upcoming release

[Stephen Weeks]

> 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%

I don't know why unknown is now gone.  I did have one other thought (now less
likely) that maybe it was due to the zeroing out due to mmap.