Fixed #11194 -- Corrected loading of Proxy models from fixtures (and, by extension, save_base(raw=True) for Proxy models).

git-svn-id: http://code.djangoproject.com/svn/django/trunk@10955 bcc190cf-cafb-0310-a4f2-bffc1f526a37

tests/modeltests/proxy_models/fixtures/mypeople.json

@@ -0,0 +1,9 @@
+[
+    {
+        "pk": 100,
+        "model": "proxy_models.myperson",
+        "fields": {
+            "name": "Elvis Presley"
+        }
+    }
+]