libxo: bringing it in for netstat

[Phil Shafer]

Alfred Perlstein writes:
>As far as I know nothing right now.  I am just worried as the program is
>setgid kmem and although libxo is awesome I caught some formatting
>errors that upset it and cause it to crash during development.  so it
>should be audited imo.

I'd be happy to review your patch.  Is https://reviews.freebsd.org/D1380
still the right spot?

Thanks,
 Phil