Add XDR support (only built #if cygwin, for now)

[Ralf Corsepius]

On 02/25/2010 12:45 PM, Corinna Vinschen wrote:
> Hi Chuck,
>
> thanks for the patch.  I didn't look much into the actual code yet,
> but I have a few points.

Neither did I have a look into the code, but some general 
remarks/comments from the RTEMS side:

- RTEMS has an xdr port of its own (Originally derived from Sun RPC's 
original code, but heavily modified since).

- XDR in general has a lot of portability issues, esp. wrt. "exotic 
targets". Have these exotic targets been taken into account?

- XDR is hardly useful for systems without networking support.
Has this consideration been taken into account (E.g. XDR not depending 
on "networking routines".)

That said, I'd see your XDR works disabled for RTEMS at least for now 
and/or to be optional (Preferably defaulting to off).

Ralf