Redistribution  and use  in source  and binary  forms, with  or without
 modification, are permitted provided  that the following conditions are
 met :
 
 . Redistributions  of  source  code  must  retain  the  above copyright
   notice, this list of conditions and the following disclaimer.
   
 . Redistributions in  binary form  must reproduce  the above  copyright
   notice, this list of conditions  and the following disclaimer in  the
   documentation and/or other materials provided with the distribution.
   
 . The name of the author may not be used to endorse or promote products
   derived from this software without specific prior written permission.
   
 THIS SOFTWARE IS  PROVIDED BY THE  AUTHOR ``AS IS''  AND ANY EXPRESS  OR
 IMPLIED  WARRANTIES,  INCLUDING,  BUT   NOT  LIMITED  TO,  THE   IMPLIED
 WARRANTIES OF MERCHANTABILITY AND  FITNESS FOR A PARTICULAR  PURPOSE ARE
 DISCLAIMED.  IN NO  EVENT SHALL  THE AUTHOR  BE LIABLE  FOR ANY  DIRECT,
 INDIRECT,  INCIDENTAL,  SPECIAL,  EXEMPLARY,  OR  CONSEQUENTIAL  DAMAGES
 (INCLUDING,  BUT  NOT LIMITED  TO,  PROCUREMENT OF  SUBSTITUTE  GOODS OR
 SERVICES;  LOSS  OF USE,  DATA,  OR PROFITS;  OR  BUSINESS INTERRUPTION)
 HOWEVER CAUSED  AND ON  ANY THEORY  OF LIABILITY,  WHETHER IN  CONTRACT,
 STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
 ANY  WAY  OUT OF  THE  USE OF  THIS  SOFTWARE, EVEN  IF  ADVISED OF  THE
 POSSIBILITY OF SUCH DAMAGE.