Finished adding python3 support corrections
Fixed print statements. Installes correctly on Python versions 2.6, 2.7, and 3.3
Avoid unnecessary list() calls
Fix string_types checks
Correct reference for iteritems
Use absolute imports, fix circular dependency
Add tests that covers ~50% of the project.
Add a tox.ini file to build against 2.7 and 3.3
Fix call to _load_current_cluster
Merge branch 'master' into python3-support

Conflicts:
	ccmlib/common.py
Merge pull request #107 from thobbs/python3-support

Python3 support