Fixed #2611 -- Fixed XML serializer to handle null datetime fields. Thanks for reporting, csdurfee@gmail.com
Fixed #2611 -- Fixed XML serializer to handle null datetime fields. Thanks for reporting, csdurfee@gmail.com

git-svn-id: 4f9f921b081c523744c7bf24d959a0db39629563@3687 bcc190cf-cafb-0310-a4f2-bffc1f526a37

FlaPer87/django-nonrel,aparo/django-nonrel,aparo/django-nonrel,aparo/django-nonrel,FlaPer87/django-nonrel,FlaPer87/django-nonrel