[dhcp] adds checksum
first step before eating: packet structure + some macros for message types
[dhcp] adds protocols files
rename packet.h -> dhcp.h
added UDP packet structure + {de,}mangle
renamed file
helper dhcp function
check for dhcpoffer
Merge branch 'dhcp' of github.com:hauspie/rflpc into dhcp
changed uint8_t [4]  into uint32_t
changed xid from uint8_t[4] to uint32_t
Merge branch 'dhcp' of github.com:hauspie/rflpc into dhcp
Sending request after offer
Adds todo
Prints DHCP ACK informations
Cleans DHCP sample a bit