Copyright (C) 2001-2007 Miklos Szeredi. All rights reserved.
   12: 
   13:     Redistribution and use in source and binary forms, with or without
   14:     modification, are permitted provided that the following conditions
   15:     are met:
   16:     1. Redistributions of source code must retain the above copyright
   17:        notice, this list of conditions and the following disclaimer.
   18:     2. Redistributions in binary form must reproduce the above copyright
   19:        notice, this list of conditions and the following disclaimer in the
   20:        documentation and/or other materials provided with the distribution.
   21: 
   22:     THIS SOFTWARE IS PROVIDED BY AUTHOR AND CONTRIBUTORS ``AS IS'' AND
   23:     ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   24:     IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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   27:     DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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   29:     HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   30:     LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   31:     OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   32:     SUCH DAMAGE.