* Merged Athena telnetd changes for creating a new option for requiring
encryption.
* Add implementation of the RPCSEC_GSS authentication flavor to the RPC
library.
* The kadmind4 backwards-compatibility admin server and the v5passwdd
backwards-compatibility password-changing server have been removed.
* Thread safety for krb5 libraries.
* Yarrow code now uses AES.
* Merged Athena changes to allow ftpd to require encrypted passwords.
* Incorporate gss_krb5_set_allowable_enctypes() and
gss_krb5_export_lucid_sec_context(), which are needed for NFSv4.
* Fix heap buffer overflow in password history mechanism.
[MITKRB5-SA-2004-004]
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