Copyright (c) 1994-1995
Waldemar Celes Filho, Luiz Henrique de Figueiredo, Roberto Ierusalimschy.
All rights reserved.

Permission is hereby granted, without written agreement and without license
or royalty fees, to use, copy, modify, and distribute this software and its
documentation for any purpose, provided that the above copyright notice and
the following two paragraphs appear in all copies of this software.

In no event shall the authors be liable to any party for direct, indirect,
special, incidental, or consequential damages arising out of the use of this
software and its documentation.

The authors specifically disclaims any warranties, including, but not limited
to, the implied warranties of merchantability and fitness for a particular
purpose.  the software provided hereunder is on an "as is" basis, and the
authors have no obligation to provide maintenance, support, updates,
enhancements, or modifications.