choice of variable names for rc.conf and option name for the
experimental server.
Also replace the inaccurate description of the nfsv4 root lines
in /etc/exports, mostly with a reference to exports(5).
Approved by: kib (mentor)
This includes the addition of a new flag "-4" that will force
use of the experimental server with nfsv4 support in it. This
commit also adds two new man pages to the repository that are
NFSv4 specific. One describes the file used by the server to
restart nfsv4 services safely. The other is a brief overview
of nfsv4 and its setup.
Reviewed by: dfr
Approved by: kib (mentor)
