Redistribution and use in source and binary forms are permitted provided that: 

(1) source distributions retain this entire copyright notice and comment, and 

(2) distributions including binaries display the following acknowledgement:
``This product includes software developed by copyright holder and its
contributors'' in the documentation or other materials provided with the
distribution and in all advertising materials mentioning features or use of this
software.

Neither the name of the {copyright-holder} nor the names of its contributors may
be used to endorse or promote products derived from this software without
specific prior written permission.

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.