[1.2.X] Fixed #13411 -- Made sure URL fragments are correctly handled by the...

[1.2.X] Fixed #13411 -- Made sure URL fragments are correctly handled by the next_redirect utility of the comments apps. Thanks, timesong, dpn and Julien Phalip.

Backport from trunk (r15720).

git-svn-id: http://code.djangoproject.com/svn/django/branches/releases/1.2.X@15721 bcc190cf-cafb-0310-a4f2-bffc1f526a37