Fixed #10756 -- Error in the formats accepted by PLNIPField. Thanks remik for...

Fixed #10756 -- Error in the formats accepted by PLNIPField. Thanks remik for the report, michalm for the patch and claudep for the review.


git-svn-id: http://code.djangoproject.com/svn/django/trunk@17346 bcc190cf-cafb-0310-a4f2-bffc1f526a37