This is a tiny patch and adjustments to manpages to improve the
interaction of import(4) and exportfs(4).  Normally, the -a flag to
exportfs is incompatible with the -r and -S flags to select so subtree
or /srv/service to serve.  The reason for this is that import(4) does
not offer a "skip initial protocol" mode to match the behavior of
exportfs (4) -r and -S options.

This patch adds a -z flag to import (4) so it can successfully import
authenticated exportfs of specific subtrees or services.  Updated
manpages are included.  This patch is being submitted to the main
distribution and if it is accepted will no longer be maintained in
this directory.

USAGE:

import -z tcp!server!port name /mountpoint

name must be provided even though it is not sent to the remote server.
The remote server should have already run a command such as:

aux/listen1 tcp!*!port /bin/exportfs -a -S /srv/service

or

aux/listen1 tcp!*!port /bin/exportfs -a -r /usr/myexport