Log Message:
Update cyrus-sasl (and plugins, authd) to 2.1.22.

New in 2.1.22
-------------

* Added support for spliting big data blocks (bigger than maxbuf)
  into multiple SASL packets in sasl_encodev
* Various sasl_decode64() fixes
* Increase canonicalization buffer size to 1024 bytes
* Call do_authorization() after successful APOP authentication
* Allow for configuration file location to be configurable independently
  of plugin location (bug # 2795)
* Added sasl_set_path function, which provides a more convenient way
  of setting plugin and config paths. Changed the default
  sasl_getpath_t/sasl_getconfpath_t callbacks to calculate
  the value only once and cache it for later use.
* Fixed load_config to search for the config file in all directories
  (bug # 2796). Changed the default search path to be
  /usr/lib/sasl2:/etc/sasl2
* Don't ignore log_level configuration option in default UNIX syslog
  logging callback
* (Windows) Minor IPv6 related changes in Makefiles for Visual Studio 6
* (Windows) Fixed bug of not setting the CODEGEN (code generation option)
  nmake option if STATIC nmake option is set.
* Several fixed to DIGEST-MD5 plugin:
  - Enable RC4 cipher in Windows build of DIGEST-MD5
  - Server side: handle missing realm option as if realm="" was sent
  - Fix DIGEST-MD5 to properly advertise maxssf when both DES and RC4
    are disabled
  - Check that DIGEST-MD5 SASL packet are no shorter than 16 bytes
* Several changes/fixed to SASLDB plugin:
  - Prevent spurious SASL_NOUSER errors
  - Added ability to keep BerkleyDB handle open between operations
    (for performance reason). New behavior can be enabled
    with --enable-keep-db-open.
* Better error checking in SQL (MySQL) auxprop plugin code
* Added support for HTTP POST password validation in saslauthd
* Added new application ("pluginviewer") that helps report information
  about installed plugins
* Allow for building with OpenSSL 0.9.8
* Allow for building with OpenLDAP 2.3+
* Several quoting fixes to configure script
* A large number of other minor bugfixes and cleanups