Convert much of the regression tests to use absolute imports. There's still work to be done though.

git-svn-id: http://code.djangoproject.com/svn/django/trunk@16976 bcc190cf-cafb-0310-a4f2-bffc1f526a37

tests/regressiontests/custom_columns_regress/tests.py

@@ -1,7 +1,10 @@
-from django.test import TestCase
-from django.core.exceptions import FieldError
+from __future__ import absolute_import
+
+from django.core.exceptions import FieldError
+from django.test import TestCase
+
+from .models import Author, Article
 
-from models import Author, Article
 
 def pks(objects):
     """ Return pks to be able to compare lists"""