Migrated LMac mac layer from MiXiM to INET.
Factored out common parts of example configurations into base sections.
Added LMac examples.
Changed to use default values for some parameters, updated fingerprints.
Added getBroadcastAddress to IAddressType.
Added getNetworkAddress to InterfaceEntry.
Ported probabilistic network layers from MiXiM to INET.
Ported WiseRoute from MiXiM to INET.

ARP doesn't work yet.
Changed routingTable to be optional.
Extracted reusable SimpleNetworkLayer.