Major nDPId extension. Sorry for the huge commit.

- nDPId: fixed invalid IP4/IP6 tuple compare
 - nDPIsrvd: fixed caching issue (finally)
 - added tiny c example (can be used to check flow manager sanity)
 - c-captured: use flow_last_seen timestamp from `struct nDPIsrvd_flow`
 - README.md update: added example JSON sequence
 - nDPId: added new flow event `update` necessary for correct
   timeout handling (and other future use-cases)
 - nDPIsrvd.h and nDPIsrvd.py: switched to an instance
   (consists of an alias/source tuple) based flow manager
 - every flow related event **must** now serialize `alias`, `source`,
   `flow_id`, `flow_last_seen` and `flow_idle_time` to make the timeout
   handling and verification process work correctly
 - nDPIsrvd.h: ability to profile any dynamic memory (de-)allocation
 - nDPIsrvd.py: removed PcapPacket class (unused)
 - py-flow-dashboard and py-flow-multiprocess: fixed race condition
 - py-flow-info: print statusbar with probably useful information
 - nDPId/nDPIsrvd.h: switched from packet-flow only timestamps (`pkt_*sec`)
   to a generic flow event timestamp `ts_msec`
 - nDPId-test: added additional checks
 - nDPId: increased ICMP flow timeout
 - nDPId: using event based i/o if capturing packets from a device
 - nDPIsrvd: fixed memory leak on shutdown if remote descriptors
   were still connected

Signed-off-by: Toni Uhlig <matzeton@googlemail.com>

examples/py-schema-validation/py-schema-validation.py

@@ -18,7 +18,7 @@ class Stats:
     print_dot_every = 10
     print_nmb_every = print_dot_every * 5
 
-def onJsonLineRecvd(json_dict, current_flow, global_user_data):
+def onJsonLineRecvd(json_dict, instance, current_flow, global_user_data):
     validation_done = nDPIsrvd.validateAgainstSchema(json_dict)
 
     global_user_data.lines_processed += 1
@@ -45,7 +45,7 @@ if __name__ == '__main__':
     nsock = nDPIsrvdSocket()
     nsock.connect(address)
     try:
-        nsock.loop(onJsonLineRecvd, Stats())
+        nsock.loop(onJsonLineRecvd, None, Stats())
     except nDPIsrvd.SocketConnectionBroken as err:
         sys.stderr.write('\n{}\n'.format(err))
     except KeyboardInterrupt: