Fixed #17303 -- Ensured the list of template loaders is fully loaded before it...

Fixed #17303 -- Ensured the list of template loaders is fully loaded before it is cached. Thanks andrey DOT gtx AT gmail DOT com for the report and patch, and Anssi Kääriäinen for the review.


git-svn-id: http://code.djangoproject.com/svn/django/trunk@17295 bcc190cf-cafb-0310-a4f2-bffc1f526a37