napatech: Implementation of packet counters

napatech: Implementation of packet counters

added util-napatech module which contains implementation threads
for processing statistics.  And modified source-napatech and
runmode-napatech to instantiate the threads.

napatech: Implementation of packet counters

napatech: implementation of statistics counters

napatech: Implementation of packet counters.

napatech: added util-napatech module

napatech: added utils-napatech module.

added include declaration and napatech specific structure when HAVE_NAPATECH
is defined.

Added util-napatech module to project.