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.
