pull up r23602, r23604, r23605 from trunk

 ------------------------------------------------------------------------
 r23605 | hartmans | 2010-01-07 13:35:15 -0500 (Thu, 07 Jan 2010) | 4 lines

 ticket: 6624

 Revert change to Makefile.in that ended up not being needed

 ------------------------------------------------------------------------
 r23604 | hartmans | 2010-01-07 13:32:20 -0500 (Thu, 07 Jan 2010) | 10 lines

 Subject: automated tests for anonymous pkinit
 ticket: 6624
 target_version: 1.8
 tags: pullup

 Implement tests for anonymous pkinit.  A certificate and private key
 are checked in; these tests will stop working in 2023.

 Note that r23602 needs to be pulled up before this ticket.

 ------------------------------------------------------------------------
 r23602 | ghudson | 2010-01-07 12:26:58 -0500 (Thu, 07 Jan 2010) | 4 lines

 Make preauth_module_dir override, rather than supplement, the
 built-in path list, to avoid problems with running the same preauth
 module twice.

https://github.com/krb5/krb5/commit/19a80c56ec5d1b303b72bd7a7b058f1d9075d710
Commit By: tlyu
Revision: 23617
Changed Files:
U   branches/krb5-1-8/src/kdc/kdc_preauth.c
U   branches/krb5-1-8/src/lib/krb5/krb/preauth2.c
U   branches/krb5-1-8/src/tests/dejagnu/config/default.exp
U   branches/krb5-1-8/src/tests/dejagnu/krb-standalone/standalone.exp
A   branches/krb5-1-8/src/tests/dejagnu/pkinit-certs/
A   branches/krb5-1-8/src/tests/dejagnu/pkinit-certs/ca.pem
A   branches/krb5-1-8/src/tests/dejagnu/pkinit-certs/kdc.pem
A   branches/krb5-1-8/src/tests/dejagnu/pkinit-certs/privkey.pem