AODV example: changed omnetpp.ini so that it works with the new Radio.
RadioMedium: added NeighborCache support.
RadioMedium: sendToNeighbors() gets non-const transmitter.
GridNeighborCache: added implementation.
NeighborListCache: added implementation.
QuadTreeNeighborCache: added implementation.
NeighborCaches & IdealMac & AODVRouting (NED): merge fixes.
NeighborCaches: removed scenario-specific default values.
NeighborCaches: added examples.
util/QuadTree: added implementation.
QuadTreeNeighborCache: separated the data structure.
Radio: Moved neighbor cache to common.
Radio: Added inet namespace to new files after merge.
Radio: Added default value for neighbor cache.
enable/disable CCANVAS-related codes
AODV fingerprints changed somewhere - omnetpp 4.x fingerprints generated only, should be testing on omnetpp 5.0, too