[python/build] Modified install command for setup.py allowing --datadir and --prefix to be passed in. If there's a virtualenv active and nothing else is specified, install libpostal and its data files there by default
[python/build] Modified install command for setup.py allowing --datadir and --prefix to be passed in. If there's a virtualenv active and nothing else is specified, install libpostal and its data files there by default

openvenues/libpostal,openvenues/libpostal,openvenues/libpostal,openvenues/libpostal