Comment 6 for bug 638600

Applied upstream (with slightly changed comment to fit it on one line :), thanks for the patch and testing efforts.

This will go to rawhide (and eventually F10 updates too) on next update round, but note that there's no way the digestalgo stuff is going to get backported to rpm 4.4.x. For RHEL it doesn't matter as only supported upgrade path is through anaconda where this is not an issue, for Fedora it's just preupgrade from F9 and older which wont work.