From: "William A.(Andy) Adamson" <andros@citi.umich.edu>

this is the first of several patches against 2.5 concerning NFSv4 state for
nfsd. it cleans up the names of state structures in preperation for future
share, lease, byte-range, and delegation patches. specifically, it

1) renames portions of the stateid_t and moves it along with the clientid_t
from xdr.h into state.h

2) uses xdr_netobj to gather related data and length fields in struct
nfs4_open (in xdr4.h) (e.g. we have op_fname.data and op_fname.len
instead of op_name and op_namelen).

3) renames NFSD4_CLIENT_MAXNAME to NFS4_OPAQUE_LIMIT which will be used in
other state fields (not just for name length)