pull up r23603 from trunk

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 r23603 | hartmans | 2010-01-07 13:32:15 -0500 (Thu, 07 Jan 2010) | 7 lines

 subject: Always treat anonymous as preauth required
 ticket: 6623
 target_version: 1.8
 tags: pullup

 Always treat the WELLKNOWN/ANONYMOUS principal as requiring pre-authentication.  The anonymous draft depends on a pre-auth exchange to invoke pkinit.

https://github.com/krb5/krb5/commit/8a4281be212e34f85b1acc86f1b9126cbe9f06a5
Commit By: tlyu
Revision: 23616
Changed Files:
U   branches/krb5-1-8/src/kdc/do_as_req.c