Network Filesystem Group (`type:=nfsx')
=======================================

   The "nfsx" filesystem allows a group of filesystems to be mounted
from a single NFS server.  The implementation is layered above the
`nfs' implementation so keep-alives work in the same way.

   The options are the same as for the `nfs' filesystem with one
difference.

The following options must be specified:

`rhost'
     the remote fileserver.  This must be an entry in the hosts
     database.  IP addresses are not accepted.  The default value is
     taken from the local host name (`${host}') if no other value is
     specified.

`rfs'
     as a list of filesystems to mount.  The list is in the form of a
     comma separated strings.

For example:

     pub      type:=nfsx;rhost:=gould;\
     		rfs:=/public,/,graphics,usenet;fs:=${autodir}/${rhost}/root

   The first string defines the root of the tree, and is applied as a
prefix to the remaining members of the list which define the individual
filesystems.  The first string is *not* used as a filesystem name.  A
parallel operation is used to determine the local mount points to
ensure a consistent layout of a tree of mounts.

   Here, the *three* filesystems, `/public', `/public/graphics' and
`/public/usenet', would be mounted.

   A local mount point, `${fs}', *must* be specified.  The default
local mount point will not work correctly in the general case.  A
suggestion is to use `fs:=${autodir}/${rhost}/root'.