- they are useful in some tests and there's no good place to put them other than here

- it no longer returns the descriptor
- the old name is still available as a deprecated alias

- use the same technique on sendto
- add 'flags' argument to sendall as well

- the same applies to recvfrom, recvfrom_into, recv_into

 - wait for read/write instead of write
 - before calling connect, check SO_ERROR

- it deprecates with_timeout.py, parse_results.py, generate_report.py and record_results.py

 - event (use gevent.event.Event)
 - execute (use gevent.spawn(...).get())
 - Queue and channel (use gevent.queue.Queue)