Fix incorrect exit code when --verify-config returns successfully

Ticket #83
Add ethernet interface name to the ipList file
Initial work on DHCP renewal
More work on getting DHCP renewals to work properly
Fix bcast scripts triggered even if the bcast packet was different interface

UDP broadcast packets to say 255.255.255.255 arriving on eth0 would not 
only be sent to the honeypots on eth0, but instead all of the honeypots.
Fix broadcast address for bcast scripts to be the subnet bcast address
Fix bug where honeyd was trying to ARP for the interface bcast addresses