Multicast README
IPv6 Multicast Example
Multicast compile regression tests
Minor code style fixes
Simple regression test for the IPv6 multicast code with 12 nodes (11 hops) in a line configuration
Simple regression test for the IPv6 multicast code with 32 nodes (31 hops) in a line configuration
Don't wait for a specific packet (which may not arrive) - instead, wait for any packet to arrive.
Point to the correct trickle param
Improve sliding window inclusion in ICMP datagrams

* Don't advertise datagrams older than Tactive
* Don't include sliding windows unless they have at least one
  datagram assiciated with them
Don't advertise datagrams older than Tactive
Check Tactive irrespective of suppression
Update regression sims to org.contikios