[phobos] master phobos brunch, weird bug

[Dmitry Olshansky]

Ok, I got this one sorted out - I should have built the latest dmd from 
git instead of using the one from the last release.

> core.exception.AssertError at std.conv(2509): unittest failure
> ----------------
> core.exception.AssertError at std\json.d(459): 1223 should be 1.223e+24
> ----------------
> ...
> Closer examination shows that this test fails:
> f = to!float( "123e+2" );
> assert( f == 123e+2f ); //replacing with writeln shows... 123  WTF??!
> And then mystery continues as placing writeln in one branch of parse 
> makes it work again!
> (but fills screen with neat column of numbers)
> At conv.d:1569
> ...
>         while (exp > 0)
>         {
>             while (exp >= pow)
>             {
>                 ldval *= postab[u];
>                 exp -= pow;
>                 writeln(u);  // <<<< here!
>             }
>             pow >>= 1;
>             u++;
>         }
> ...
-- 
Dmitry Olshansky