Remove MD5 and SHA1 options (both are now always on). Rename
functions to be lutil_ instead of ldap_.
Create --enable-cleartext option. Default is currently 'on'.
SHA1 support is contributed by Daniel J. Gregor <dj@gregor.com>
MD5 support is contributed by me <kurt@OpenLDAP.org>
Uses public domain MD5 routines
Uses ISC/IBM freely redistributable Base64 routines
SHA1 support requires external SHA1 routines