add NetworkChannelPacket class, and modify NetworkTarget::send/send_raw signature. Add hard-coded DEBUG_ENABLED define
#include "Target.hh"
#include <cassert>
void NetworkTarget::send_raw (const NetworkPacketBuffer &pkt, bool reliable) {
// just send
send_pkt(pkt, reliable);
}
void NetworkTarget::send (const NetworkChannelPacket &pkt, bool reliable) {
// just send
send_pkt(pkt, reliable);
}