bug#14803: Setting close-on-exec flag consistently

[Eli Zaretskii]

> Date: Sat, 06 Jul 2013 23:34:18 -0700
> From: Paul Eggert <eggert@cs.ucla.edu>
> CC: 14803@debbugs.gnu.org
> 
> On 07/06/2013 07:46 PM, Eli Zaretskii wrote:
> > This should probably go into nt/mingw-cfg.site.
> 
> Thanks, I didn't know about that file.

Well, it was your idea ;-)

> Also, it strikes me that since MinGW doesn't have pipe2,
> there's no need to have "#define pipe2 sys_pipe2".

Right.

> Revised patch attached.

Thanks, this looks OK to me.