util: new .gdbinit.py file in the project root. This file is automatically invoked on debug session in omnet 4.3+
prettyprinter: changes for enable/disable pretty printers

added global variable inet_pp_enabled:
  initially value: enabled/disabled  inet pretty printers
added InetPrinter.subprinters:
  used by "info|enable|disable pretty-printer" gdb commands
Address: added IPv6 cases for some functions
IPv6ControlInfo: bugfix

was endless recursion...
manetrouting: fixes for manet netfliter hooks

 - ift and rt member was uninitialized
 - modified includes
NodeBase fix after rename: RoutingTable renamed to IPv4RoutingTable
HACK: ModulePathAddress resolves only interface module paths