/usr/share/cracklib/pw_dict.pwd is 8.3M. With gzip -9, this goes down to 3.6M, and still works (see the cracklib-format man page). Please add gzip -9 to the specfile. Thanks!
Impossible due to terrible performance impact.
See also: https://bugzilla.redhat.com/show_bug.cgi?id=972542#c7
In that case, can we do bug #865521? I guess I'll bring this up on the Fedora security list.