Fixed OMNeT++ bug with initialization of EARA
Fixed smaller bug: OMNeT++ RoutingTableWatcher for the GUi did no longer work
Fixed OMNeT packet handling problems: removed casts to OMNeTPacket

We can't cast to OMNeTPacket any longer because we now also have the
OMNeTEARAPacket class for EARA simulations
Fixed very minor issue with EARAPacket protection against overflow
Fixed copy problem in OMNeTEARA packet
Created very simple EARA test scenario for debugging
Fixed packet processing bug in EARA
Fixed problem with EARA BANTs

When a BANT was initially created and broadcasted, the client would
already add the residual energy of the sending node which would confuse
the energy initialization. This fix avoids using the broadcast method of
the AbstractNetworkClient which is overridden in EARA