Copyright 1994, 1996, 1997, 1999, 2001, 2002, 2003, 2005, 2006
  Board of Trustees, Leland Stanford Jr. University
  
All rights reserved.
  
Export of this software from the United States of America may require a
specific license from the United States Government.  It is the
responsibility of any person or organization contemplating export to
obtain such a license before exporting.

WITHIN THAT CONSTRAINT, permission to use, copy, modify, and distribute
this software and its documentation for any purpose and without fee is
hereby granted, provided that the above copyright notice appear in all
copies and that both that copyright notice and this permission notice
appear in supporting documentation, and that the name of Stanford
University not be used in advertising or publicity pertaining to
distribution of the software without specific, written prior permission.
Stanford University makes no representations about the suitability of
this software for any purpose.  It is provided "as is" without express
or implied warranty.

THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED
WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.