This is a patch for exportfs and its manpage. It fixes the issue in
exportfs, that if you specify -n (no none) or -N (other namespace)
after -a (authenticate), that these options have no effect. This was
due to the fact that -a was handled in and not after the argument
processing. In the manpage the wrong stated '-n' is corrected to be
the real '-N' and '-n' is now documented.