One link test is made possible.
Ready for debug of HHRfNode.
Debug of HHRfNode and SinglePacket.

HHRfNode: SD() not properly.
SinglePacket: wrong copy when cloned.
HHRfNode debug.

RD() debug. Previous version does not clear buffer correctly.
Debug of HHRfNode::scheduled().

Previous version contains wrong SD condition.
HHRfNode: debug.

Previous version did not increment request_map upon SR transmission.
Logger and Packet time stamp added.