Add test buildout for Plone 4.2 with Python 2.6
Fix TypeError with Python 2.6 and Plone.

TypeError: super() argument 1 must be type, not classobj

The logging.Handler is not a classobj in python 2.6, so we can't use super.
Merge pull request #2 from 4teamwork/jone-py-2.6

Fix TypeError with Python 2.6 and Plone.