This software may be used, modified, copied, distributed, and sold,
both in source and binary form provided that the above copyright
notice and these terms are retained. The name of the author may not
be used to endorse or promote products derived from this software
without prior permission.  THIS SOFTWARE IS PROVIDES "AS IS" AND
ANY EXPRESS OR IMPLIED WARRANTIES ARE DISCLAIMED.  IN NO EVENT
SHALL THE AUTHOR BE LIABLE FOR ANY DAMAGES ARISING IN ANY WAY OUT
OF THE USE OF THIS SOFTWARE.
