NQNFS support being removed

[Matthew Dillon <dillon@xxxxxxxxxxxxxxxxxxxx>]

    NQNFS support (the one that leases access to files) is being removed.
    The mechanisms are just too crude for me to be able to use them in
    tandem with the cache coherency management system being designed.
    Really crude.  Bad hacks, actually... amazing it could ever have worked.

    Normal NFSv2 and NFSv3 mounts will still work, of course.

						-Matt