Move logging initialization into a function
Add regression test for tool.initialize_logging
Fix curdling.tool for Python 2.6

logging.StreamHandler has a different constructor in Python <2.7. This
change instantiates the handler differently based on whether the user
is running Python older than 2.7.
Add comment to new test
Merge pull request #57 from patricklucas/fix_curd_for_py26

Fix curd for Python 2.6