hashing tests fail on 32-bit linux

[ViralBShah]

$ make test
JULIA test/default
* core
* numbers
* strings
* corelib
* hashing
assertion failed: ||(!(isequal(a,b)),hash(a)==hash(b))
in error, /home/viral/julia/j/error.j:5
in runtests, lib.j:3
in load, src/boot.j:193
in process_options, /home/viral/julia/j/client.j:88
in _start, /home/viral/julia/j/client.j:122
at hashing.j:18
at default.j:6
make[1]: *** [default] Error 1
make: *** [test] Error 2

[JeffBezanson]

This is a regression.