Convert the remainder of the relative imports in the tests to be absolute imports.

git-svn-id: http://code.djangoproject.com/svn/django/trunk@16981 bcc190cf-cafb-0310-a4f2-bffc1f526a37

tests/regressiontests/string_lookup/models.py

@@ -1,6 +1,7 @@
 # -*- coding: utf-8 -*-
 from django.db import models
 
+
 class Foo(models.Model):
     name = models.CharField(max_length=50)
     friend = models.CharField(max_length=50, blank=True)