[Rd] fifo on Windows

[Duncan Murdoch]

Gabor Grothendieck wrote:
> Are there any plans to support fifo on Windows?  On my XP
> system ("R version 2.1.1, 2005-06-23")
> 
>    R> capabilities("fifo")
> 
> gives FALSE.
> 
> Note that Windows does support named pipes as shown
> in the utility:
> 
>    http://gearbox.maem.umr.edu/fwu/pipeslot.zip

I think named pipes are only supported on the NT descendants.  We will 
need to drop support for Win9x soon, but I think we still have a number 
of users using Win98 and maybe WinME.

I guess we could add support for features that only work on some Windows 
platforms, but I'd rather not do that until we're not officially saying 
that R runs on Win9x.

Duncan Murdoch