Fix the new NFS client so that it handles the 64bit fields that are now in "struct statfs" for NFSv3 and NFSv4. Since the ffiles value is uint64_t on the wire, I clip the value to INT64_MAX to avoid setting f_ffree negative.
Fix the new NFS client so that it handles the 64bit fields
that are now in "struct statfs" for NFSv3 and NFSv4. Since
the ffiles value is uint64_t on the wire, I clip the value
to INT64_MAX to avoid setting f_ffree negative.

Tested by:	kib
MFC after:	2 weeks

jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase