Supervisor/supervisor — pull request #393 by msabramo (2014-02-25 19:14:04+00:00)
Title: Add RotatingFileHandler.__del__ that closes stream

Eliminates 5 of the `ResourceWarning` warnings mentioned in GH-391.

### Without:

```
$ PYTHONWARNINGS="d" .tox/py33/bin/nosetests -q 2>&1 | grep -c ResourceWarning
13
```

### With:

```
$ PYTHONWARNINGS="d" .tox/py33/bin/nosetests -q 2>&1 | grep -c ResourceWarning
8
```