[phobos] d1 tests

[Brad Roberts]

I'm running the d1 tests for the first time in.. well, can't remember the last
time on linux/32.  I'm having problems:

<snip>
_arrayExpSliceMulass_i unittest
_arraySliceSliceMulass_i unittest
_arraySliceSliceMulass_i unittest end
Error: conversion 1.17549e-38 not representable as a float
make: *** [unittest] Error 1

That conversion comes from std/conv.d testing: f = toFloat("1.17549e-38");

Anyone else see this same failure?  I've got a few changes to dmd, but nothing
anywhere near fp related code.

Thanks,
Brad