Merge pull request #19 from sim590/dp-enhance

include/opendht/dht.h

include/opendht/dhtrunner.h

include/opendht/value.h

python/opendht.pyx

python/opendht_cpp.pxd

python/setup.py.in

python/tools/benchmark.py

python/tools/dhtnetwork.py

src/dht.cpp

src/dhtrunner.cpp

src/value.cpp