Use the new -s flag to mount the /usr and /var partitions. Avoids
doubly mounted mfs partitions. Also, at the end of the mount dance,
try mount all partitions, not just nfs partitions. Handles a case
where local paritition mounted inside a nfs partition where not
mounted by rc (/usr on nfs with a local /usr/obj, for example).
ok deraadt@ henning@