Copyright 2009, 2010 The University of Texas at Austin.
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Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are
met:

   1. Redistributions of source code must retain the above copyright
      notice, this list of conditions and the following disclaimer.

   2. Redistributions in binary form must reproduce the above copyright
      notice, this list of conditions and the following disclaimer in
      the documentation and/or other materials provided with the
      distribution.

THIS SOFTWARE IS PROVIDED BY THE UNIVERSITY OF TEXAS AT AUSTIN ``AS IS''
AND ANY  EXPRESS OR IMPLIED  WARRANTIES, INCLUDING, BUT NOT  LIMITED TO,
THE IMPLIED  WARRANTIES OF MERCHANTABILITY AND FITNESS  FOR A PARTICULAR
PURPOSE ARE  DISCLAIMED.  IN NO EVENT  SHALL THE UNIVERSITY  OF TEXAS AT
AUSTIN OR  CONTRIBUTORS BE LIABLE FOR ANY  DIRECT, INDIRECT, INCIDENTAL,
SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
TO, PROCUREMENT OF  SUBSTITUTE GOODS OR SERVICES; LOSS  OF USE, DATA, OR
PROFITS; OR BUSINESS  INTERRUPTION) HOWEVER CAUSED AND ON  ANY THEORY OF
LIABILITY,  WHETHER IN  CONTRACT, STRICT  LIABILITY, OR  TORT (INCLUDING
NEGLIGENCE  OR OTHERWISE)  ARISING IN  ANY WAY  OUT OF  THE USE  OF THIS
SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

The views and conclusions contained in the software and documentation
are those of the authors and should not be interpreted as representing
official policies, either expressed or implied, of The University of
Texas at Austin.