Fixed #6852 -- Converted the admin to use the new paginator, to remove...

Fixed #6852 -- Converted the admin to use the new paginator, to remove DeprecationWarnings. Thanks for the patch, nickefford

git-svn-id: http://code.djangoproject.com/svn/django/trunk@7363 bcc190cf-cafb-0310-a4f2-bffc1f526a37