1.1 Fix PL_ macros for Perl 5.6 compatibility.

1.0     First production release.
        Moved module into the Authen:: namespace.  This should get the Krb4
        on the main module list, making it easier to find.

0.93 Implemented get_svc_in_tkt, read_service_key, and dest_tkt.

Added DESTROY methods for all Krb4 objects to avoid memory leaks.

0.92 Replaced system memory functions with Perl macros.

        Implemented krb_get_pw_in_tkt for password authentication.
        Better sample code, including both client and server scripts.
        Cleaned up some code to make compilation somewhat quieter.

0.91 Implemented sendauth and recvauth. Fixed a bug in mk_priv and

        rd_priv where empty strings weren't being encrypted/decrypted
        correctly.  Cleaned up some of the code.

0.9     Added object oriented interface.  Beta version released.