Fix a typo in version_greater().
Fix a typo in GetBucketKey.__call__().
There's no need to use self.conf in preference to conf.
Add some missing imports.
Left out the module containing BucketLoader.
Use log level WARNING, since there is no NOTICE.
Correct a config vs. conf typo.
Exclude versions less than 2, not just versions equal to 1.
Add test suite for compactor.py.
Add compactor_daemon tool.