Fixed #12168 -- Corrected the registration of m2m autocreated models when models.py is split into submodules. Thanks to Jens Diemer for the report and test case.

git-svn-id: http://code.djangoproject.com/svn/django/trunk@11724 bcc190cf-cafb-0310-a4f2-bffc1f526a37

tests/modeltests/model_package/tests.py

@@ -0,0 +1,34 @@
+"""
+>>> from models.publication import Publication
+>>> from models.article import Article
+>>> from django.contrib.auth.views import Site
+
+>>> p = Publication(title="FooBar")
+>>> p.save()
+>>> p
+<Publication: Publication object>
+
+>>> from django.contrib.sites.models import Site
+>>> current_site = Site.objects.get_current()
+>>> current_site
+<Site: example.com>
+
+# Regression for #12168: models split into subpackages still get M2M tables
+
+>>> a = Article(headline="a foo headline")
+>>> a.save()
+>>> a.publications.add(p)
+>>> a.sites.add(current_site)
+>>> a.save()
+
+>>> a = Article.objects.get(id=1)
+>>> a
+<Article: Article object>
+>>> a.id
+1
+>>> a.sites.count()
+1
+
+"""
+
+