Fixed #13123 -- Cleaned up template loader for PyPy compatibility. Thanks to avostryakov for the report.

git-svn-id: http://code.djangoproject.com/svn/django/trunk@12805 bcc190cf-cafb-0310-a4f2-bffc1f526a37

django/template/loader.py

@@ -85,7 +85,7 @@ def make_origin(display_name, loader, name, dirs):
         return None
 
 def find_template_loader(loader):
-    if hasattr(loader, '__iter__'):
+    if isinstance(loader, (tuple, list)):
         loader, args = loader[0], loader[1:]
     else:
         args = []