Re-write _kadm5_set_keys2() to handle key history.
Re-write _kadm5_set_keys2() to handle key history.

madscientist159/heimdal,madscientist159/heimdal,madscientist159/heimdal,madscientist159/heimdal,madscientist159/heimdal,madscientist159/heimdal,madscientist159/heimdal