Products.CMFCore.CookieCrumbler's redirect support was moved to
Products.CMFDefault in CMF 2.3, cf:
- CMFCore: 387bd379fd9655aa1462715a04b4664f5c54974a
- CMFDefault: d319a68e8299e42a76f605ad79383bb78db14031

The absence of this backport when using CMF 2.3 creates regressions:
some redirects become Unauthorized.