krb5: new tag krb5-1.12-beta2

[Tom Yu]

A new lightweight tag "krb5-1.12-beta2" has been created in the krb5
repository for the following commit:

commit 3547533e2ef02d3e8c01a06ff5e797409fb89681
Author: Tom Yu <tlyu at mit.edu>
Date:   Wed Nov 27 15:54:45 2013 -0500

    Updates for krb5-1.12-beta2