Log Message:
Use newer DES API so that smbk5pwd loads with newer OpenSSL

OpenSSL removed old DES API which used des_* functions.
https://github.com/openssl/openssl/commit/24956ca00f014a917fb181a8abc39b349f3f316f

In order to link with libcrypto from recent OpenSSL releases, we need
to replace the older API des_* functions by the newer API DES_* functions.

Submitted upstream as ITS#8525
http://www.openldap.org/its/index.cgi/Incoming?id=8525