Apache Wicket
   Copyright 2006 The Apache Software Foundation

   This product includes software developed at
   The Apache Software Foundation (http://www.apache.org/).

   This product includes software from QOS.ch (http://slf4j.org) licensed under the X11 license
   Copyright (c) 2004-2007 QOS.ch
   
   Contains Diff library from Mavens JRCS, released under
   The Apache Software License, Version 1.1.
   (c) 1999-2003

   org.apache.wicket.util.upload contains parts of Apache Jakarta Commons FileUpload,
   released under the Apache Software License, Version 2.0. 
   (c) 2001-2004

   org.apache.wicket.util.io.IOUtils is taken from Apache Avalon, released
   under the Apache Software License, Version 2.0.
   (c) 2001-2004

   org.apache.wicket.util.io.ThresholdingOutputStream is taken from
   Apache Jakarta Commons IO, released under the
   Apache Software License, Version 2.0.
   (c) 2001-2004

   org.apache.wicket.util.crypt contains Base64 which is taken from
   Apache Jakarta Commons Codec, released under the
   Apache Software License, Version 2.0. Base64UrlSafe
   is derived from Base64.
   (c) 2001-2005

   org.apache.wicket.util.concurrent is taken from [1], which states the following:
     "All classes are released to the public domain and may be used for 
      any purpose whatsoever without permission or acknowledgment. 
      Portions of the CopyOnWriteArrayList and ConcurrentReaderHashMap 
      classes are adapted from Sun JDK source code. These are copyright 
      of Sun Microsystems, Inc, and are used with their kind permission,  
      as described in this license[2]."
   [1]: http://g.oswego.edu/dl/classes/EDU/oswego/cs/dl/util/concurrent/intro.html
   [2]: licenses/sun-u.c.license.pdf

   org.apache.wicket.markup.html.form.upload.MultiFileUploadField.js is taken from [1]
   and has the following notice:
      "Licence:
       Use this however/wherever you like, just don't blame me if it breaks
       anything.

       Credit:
       If you're nice, you'll leave this bit:

       Class by Stickman -- http://www.the-stickman.com
       with thanks to:
       [for Safari fixes]
          Luis Torrefranca -- http://www.law.pitt.edu
          and
          Shawn Parker & John Pennypacker -- http://www.fuzzycoconut.com
       [for duplicate name bug]
          'neal'"
   [1]: http://the-stickman.com/web-development/javascript/upload-multiple-files-with-a-single-file-element/