framer: Added length function to contikimac-framer.c
framer: Some comments
packetbuf: Use packetbuf_holds_broadcast() all-over
framer-802154: Create without frame802154.c
framer-802154: Parse without frame802154.c
nullrdc: Removed dependency on frame802154.c
Merge remote-tracking branch 'origin/shrink-framer'
node-id: Functions for extra configuration data
llsec: Allow for sharing PRNG
llsec: Compromise-resilient 802.15.4 security
apkes: Avoid nonce reuse in HELLOACKs, send authenticated short address
in ACKs
node-id: Function for appending extra config data
apkes: Fully pairwise keys scheme
apkes: Schedule erasure of master key within leap.c (better cohesion)
apkes: Trickle-based broadcasting of HELLOs
apkes: Automatic removal of disappeared neighbors