Fixed import error handling when application tests are stored in a tests directory, rather than a tests.py file.
Fixed import error handling when application tests are stored in a tests directory, rather than a tests.py file.

--HG--
extra : convert_revision : svn%3Abcc190cf-cafb-0310-a4f2-bffc1f526a37/django/trunk%405180

adieu/django-nonrel,adieu/django-nonrel,adieu/django-nonrel