nlGetServerHostname - Given an internet address (NL_HOST_INET_ADDR) get the hostname.
SYNOPSIS
int nlGetServerHostname(char *hostname, int hostname_length, NL_HOST_INET_ADDR address)
Given an internet address (NL_HOST_INET_ADDR) nlGetServerHostname() get the hostname.
nlGetServerHostname() put the host name on hostname.
return TRUE on success, and the string length of hostname will be
hostname_length. On failure FALSE is return, _unknown_
will be the hostname.