Minor fix str/byte issue of subprocess.
byte/str issue in test output.
Fixed test__core_stat.py
Fixed subprocess tests.
Enable tests for Python 3.3.
Make pyflakes test pass for PY3.
gevent/local.py
 * doctest
Fix str/bytes issue.
 * udp_client.py
 * gevent/subprocess.py
Fix range issue.
 * test__order.py
makefile signature bufsize -> buffering
Use only family in getaddrinfo hints when socket.connect