krb5: new tag krb5-1.12-beta1

[Tom Yu]

A new lightweight tag "krb5-1.12-beta1" has been created in the krb5
repository for the following commit:

commit 655e3013afa71dfbfbe748696883391db51a4809
Author: Tom Yu <tlyu at mit.edu>
Date:   Fri Nov 8 12:36:33 2013 -0500

    Updates for krb5-1.12-beta1