PYTHON-436 remove skiptest for python < 2.7, no longer needed
import cleanup
Merge branch 'PYTHON-436' of github.com:reversefold/mongo-python-driver into PYTHON-436
Mark RE_OPT_TABLE private.
Merge branch 'master' of git://github.com/mongodb/mongo-python-driver into PYTHON-436
PYTHON-512 start breaking out gevent/thread dependencies into interchangeable modules
Spelling
Spelling
Raise DuplicateKeyError for commands PYTHON-507

Only when appropriate. The findAndModify command
can return duplicate key error when doing an upsert.
PYTHON-512 remove direct eventlet support and rename thread_util_threading to reflect the module it uses
PYTHON-512 Deprecate use_greenlets in favor of new thread_support_module parameter to the clients
Merge branch 'master' of git://github.com/mongodb/mongo-python-driver into PYTHON-512
Merge branch 'master' of git://github.com/mongodb/mongo-python-driver into PYTHON-436
Merge branch 'PYTHON-436'
Merge branch 'PYTHON-512'
Add more versions....does travis support them?