Re: Updates to the NFSv4.2 xdr

[Tom Haynes <thomas.haynes@primarydata.com>]

And as a follow-up, I took Jorge's changes for the COPY result:

   struct COPY4res {
           nfsstat4        cr_status;
           write_response4 cr_response;
           bool            cr_consecutive;
           bool            cr_synchronous;
   };

becomes:

truct write_response4 {
           stateid4        wr_callback_id<1>;
           length4         wr_count;
           stable_how4     wr_committed;
           verifier4       wr_writeverf;
   };


   struct copy_requirements4 {
           bool            cr_consecutive;
           bool            cr_synchronous;
   };

   struct COPY4resok {
           write_response4         cr_response;
           copy_requirements4      cr_requirements;
   };

   union COPY4res switch (nfsstat4 cr_status) {
   case NFS4_OK:
           COPY4resok              cr_resok4;
   case NFS4ERR_OFFLOAD_NO_REQS:
           copy_requirements4      cr_requirements;
   default:
           void;
   };