/***********************************************************************
* Copyright 1989, 1990 by Purdue University and Dan Farmer.  All rights
* reserved.  Some individual files may be covered by other copyrights.
* 
* This material was written and compiled by Dan Farmer while at Purdue
* University in 1989 and 1990, under the direction and sponsorship of
* Professor Gene Spafford.  Other material was contributed as noted
* elsewhere.
* Redistribution and use in source and binary forms are permitted
* provided that this entire copyright notice is duplicated in all such
* copies, and that any documentation, announcements, and other
* materials related to such distribution and use acknowledge that the
* software was developed at Purdue University, W. Lafayette, IN.  No
* charge, other than an "at-cost" distribution fee, may be charged for
* copies, derivations, or distributions of this material without the
* express written consent of the copyright holders.  Neither the
* name of the University, the name of the author, nor the name of this
* project's sponsor may  be used to endorse or promote products
* derived from this material 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
* MERCHANTIBILITY AND FITNESS FOR ANY PARTICULAR PURPOSE.
************************************************************************/
