krb5: new tag kfw-4.1-beta3

[Tom Yu]

A new lightweight tag "kfw-4.1-beta3" has been created in the krb5
repository for the following commit:

commit 2e9075a06742f8538d394d8049685cc7ca1bd64f
Author: Tom Yu <tlyu at mit.edu>
Date:   Mon Apr 11 17:22:19 2016 -0400

    Updates for kfw-4.1-beta3