[D-runtime] druntime and win32wine

[Jonathan M Davis]

http://d.puremagic.com/issues/show_bug.cgi?id=5562

I don't know who the best person to edit druntime's posix.mak so that it works 
with OS=win32wine like phobos' does (I'd do it myself, but I'm not particularly 
good with makefiles), but I would ask that _someone_ who is capable of doing so 
do it relatively soon. It would make testing that druntime and phobos work on 
Windows _much_ easier for those of us who aren't normally in Windows.

On a related note, the makefile should also be updated to use lib32 and lib64 
like phobos does, so maybe that can be taken care of at the same time.

I fully understand that there may be no one both willing and capable to make 
those changes right now, but they would be of major benefit to maintaining 
druntime and phobos' stability. So, I would hope that someone would take of that 
relatively soon. I'd do it, but I'm not very good with makefiles, and I probably 
screw it up royally.

- Jonathan M Davis