[1.2.X] Fixed #14824 -- Corrected the handling of formats when USE_L10N is...

[1.2.X] Fixed #14824 -- Corrected the handling of formats when USE_L10N is disabled. Thanks to nullie for the report and initial patch, and to idle for the separate report with helpful debug info.

Backport of r15404 from trunk.

git-svn-id: http://code.djangoproject.com/svn/django/branches/releases/1.2.X@15405 bcc190cf-cafb-0310-a4f2-bffc1f526a37