Added PRIVBIND to permit configurations requiring reserved ports (< 1024...

I added the use of <a href="http://www.linuxcertif.com/man/1/privbind/">privbind</a> to permit configurations that require the use of reserved ports (< 1024).  privbind allows non-root users to open reserved ports by escalating privilege to ONLY open reserved ports - nothing else (unlike seteuid(root)).

- jss

Ref:
http://www.linuxcertif.com/man/1/privbind/