ws2_32: Add WSAPoll() implementation

[Austin English]

On Mon, Nov 16, 2015 at 7:30 AM, Bruno Jesus <00cpxxx at gmail.com> wrote:
> Signed-off-by: Bruno Jesus <00cpxxx at gmail.com>
>
> Still some todos to fix but fixes https://bugs.winehq.org/show_bug.cgi?id=38600
>
> Thanks to Sebastian for keeping it in the staging for long time.

I think you meant https://bugs.winehq.org/show_bug.cgi?id=386001 ;)