Fix version processing
Fix version processing

- First 3 elements of VERSION should be integer.
- Don't get upset with version.py non-existant, e.g. for version checked
  straight out of git.

lukaszb/django-guardian,benkonrath/django-guardian,rmgorman/django-guardian,rmgorman/django-guardian,benkonrath/django-guardian,rmgorman/django-guardian,benkonrath/django-guardian,lukaszb/django-guardian,lukaszb/django-guardian