How DMD's -w *Prevents* Me From Seeing My Warnings

[Walter Bright]

Nick Sabalausky wrote:
> Royal PITA every single time. (And a <20 line trivial fix has been sitting 
> in bugzilla for nearly a year, #2567, hell, I'll update and resubmit if 
> that'll help get it in.)

This is a different way to address the issue. Warnings do not halt 
parsing/semantic passes, but dmd still exits with an error status if 
there were any warnings.

http://www.dsource.org/projects/dmd/changeset/382