Fix django-security packaging.

Our manifest was incorrect. Defining one explicitly rather than using
setup.py's list of packages seems like it's more trouble than it's
worth.

MANIFEST

@@ -1,4 +1,4 @@
-README.md
+# file GENERATED by distutils, do NOT edit
 setup.py
 security/__init__.py
 security/admin.py
@@ -12,5 +12,8 @@ security/views.py
 security/auth_throttling/__init__.py
 security/auth_throttling/views.py
 security/migrations/0001_initial.py
-security/migrations/0002_allow_null_password_expiry.py
 security/migrations/__init__.py
+security/south_migrations/0001_initial.py
+security/south_migrations/0002_allow_null_password_expiry.py
+security/south_migrations/0003_auto__add_cspreport.py
+security/south_migrations/__init__.py

setup.py

@@ -25,8 +25,8 @@ def run(self):
       long_description=readme,
       maintainer="SD Elements",
       maintainer_email="django-security@sdelements.com",
-      version="0.9.1",
-      packages=["security", "security.migrations", "security.auth_throttling"],
+      version="0.9.2",
+      packages=["security", "security.south_migrations", "security.migrations", "security.auth_throttling"],
       url='https://github.com/sdelements/django-security',
       classifiers=[
           'Framework :: Django',