IPv4ControlInfo: typo
IPv4ControlInfo: remove unused (DSR-related) members
netfilter: redesign reinject datagram

reinjectDatagram() split to reinjectDatagram() and dropQueuedDatagram()
  removed verdict parameter of reinjectDatagram: it specified the reinject/drop action

added getQueuedDatagramForHook() for can modify output interface, next hop address, etc.
  for reinjectable datagrams
netfilter: outIE interface pointer parameter passed by reference: hook can modify it