/*
 * Copyright University of Manitoba 1998.
 * Written by J. Gary mills
 *
 * Permission is granted to anyone to use this software for any purpose on
 * any computer system, and to alter it and redistribute it freely, subject
 * to the following restrictions:
 *
 * 1. The author and the University of Manitoba are not responsible 
 *    for the consequences of use of this software, no matter how awful, 
 *    even if they arise from flaws in it.
 *
 * 2. The origin of this software must not be misrepresented, either by
 *    explicit claim or by omission.  Since few users ever read sources,
 *    credits must appear in the documentation.
 *
 * 3. Altered versions must be plainly marked as such, and must not be
 *    misrepresented as being the original software.  Since few users
 *    ever read sources, credits must appear in the documentation.
 *
 * 4. This notice may not be removed or altered.
 */

/*
 * This source was altered by Bartosz Lis <bartoszl@ics.p.lodz.pl> and
 * Rafal Otwinowski <pantera18@poczta.fm>, Technical University of Lodz.
 *
 * Altered source should be used and/or redistributed under the above
 * copyright. When this software is redistributed either without alterations
 * or further altered, credits for Bartosz Lis and Rafal Otwinowski should be
 * included.
 *
 * We made our best to write software free from errors, but as it is
 * redistributed and used for free the Authors and their Universities
 * have to disclaim any responsibility for its use.
 *
 * YOU USE THIS SOFTWARE ON YOUR OWN RISK
 */
