NOTE : On windows qimessaging MUST be compiled in release mode (qibuild --release)

1 - _qi.so is generated with boost.python in build/sdk/lib

2 - For easy testing, use :
PYTHONPATH=/home/foo/worktree/lib/qi/messaging/python/:/home/foo/worktree/lib/qi/messaging/build/sdk/lib/ python2 $@