NFS changes for next release

[Matthew Dillon <dillon@xxxxxxxxxxxxxxxxxxxx>]

    All NFS mounts will default to TCP as of the next release.  This
    will generally improve compatibility and performance, particularly
    now that DragonFly clients are capable of issuing huge numbers of
    concurrent RPCs which would otherwise blow out the socket buf used
    by UDP on many NFS servers.

    The 'mntudp' option in /etc/fstab may be used to force a UDP mount.
    This option is compatible with 2.2.x and 2.3.x.  2.3.x introduces
    a new option keyword 'udp' which does the same thing, but is more
    obvious.

					-Matt
					Matthew Dillon 
					<dillon@backplane.com>