krb5: new tag kfw-4.1-beta1

[Tom Yu]

A new lightweight tag "kfw-4.1-beta1" has been created in the krb5
repository for the following commit:

commit 2fcd15b555b0c5f60bc24459a8941c2dcbe47a3c
Author: Ben Kaduk <kaduk at mit.edu>
Date:   Tue May 12 11:22:27 2015 -0400

    Bump buildlevel for non-MIT KfW 4.1-beta1