fix for Lawson's CLOCAL problem

[Alexandre Julliard]

Mike McCormack  <mike_mccormack at start.com.au> writes:

>  Open serial ports with O_NONBLOCK if FILE_FLAG_OVERLAPPED is
> specified.

The open on the server side must always be non-blocking, we cannot
have the server block on anything. If there are cases where we need to
block on open, it will have to be done on the client side.

-- 
Alexandre Julliard
julliard at winehq.com