The GCX XQuery Engine – License

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∗∗∗∗∗∗∗∗∗∗∗∗ THE GCX XQUERY ENGINE – LICENSE ∗∗∗∗∗∗∗∗∗∗∗∗∗∗∗
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Software License Agreement (BSD License)
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Copyright (c) 2006–2009, Saarland University Database Group 
and Freiburg University Database Group. All rights reserved.

Redistribution and use of this software in source and binary forms,
with or without modification, are permitted provided that the following
conditions are met:

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

∗ 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.

∗ Neither the name the of Saarland University Database Group and the Freiburg
  University database group nor the names of its contributors may be used to
  endorse or promote products derived from this software without specific
  prior written permission of the Saarland University Database Group and
  the Freiburg University Database Group.

THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS '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 COPYRIGHT OWNER 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.