/******************************************************************************
 *                                                                            *
 * Copyright (c) David L. Mills 1992, 1993, 1994                              *
 *                                                                            *
 * Permission to use, copy, modify, and distribute this software and its      *
 * documentation for any purpose and without fee is hereby granted, provided  *
 * that the above copyright notice appears in all copies and that both the    *
 * copyright notice and this permission notice appear in supporting           *
 * documentation, and that the name University of Delaware not be used in     *
 * advertising or publicity pertaining to distribution of the software        *
 * without specific, written prior permission.  The University of Delaware    *
 * makes no representations about the suitability this software for any       *
 * purpose.  It is provided "as is" without express or implied warranty.      *
 *                                                                            *
 ******************************************************************************/

/*
 * For all files included in this distribution and not specifically marked
 * otherwise, the above copyright information applies.
 *
 * Authors
 *
 * Dennis Ferguson <dennis@mrbill.canet.ca> (foundation code for NTP
 *      Version 2 as specified in RFC-1119)
 * Lars H. Mathiesen <thorinn@diku.dk> (adaptation of foundation code for
 *      Version 3 as specified in RFC-1305)
 * Louis A. Mamakos <louie@ni.umd.edu> (support for md5-based 
 *      authentication)
 * Craig Leres <leres@ee.lbl.gov> (port to 4.4BSD operating system,
 *	ppsclock, Maganavox GPS clock driver)
 * Nick Sayer <mrapple@quack.kfu.com> (SunOS streams modules)
 * Frank Kardel <Frank.Kardel@informatik.uni-erlangen.de>(PARSE (GENERIC)
 *	driver, STREAMS module for PARSE, support scripts, reference clock
 *	configuration scripts, Makefile cleanup)
 * Rainer Pruy <Rainer.Pruy@informatik.uni-erlangen.de> (monitoring/trap
 *      scripts, statistics file handling)
 * Glenn Hollinger <glenn@herald.usask.ca> (GOES clock driver)
 * Kenneth Stone <ken@sdd.hp.com> (port to HPUX operating system)
 * Dave Katz <dkatz@cisco.com> (port to RS/6000 AIX operating system)
 * William L. Jones <jones@hermes.chpc.utexas.edu> (RS/6000 AIX
 *	modifications, HPUX modifications)
 * John A. Dundas III <dundas@salt.jpl.nasa.gov> (Apple A/UX port)
 * David L. Mills <mills@udel.edu> (Spectractom WWVB, Austron GPS,
 *	Heath, ATOM, ACTS, KSI/Odetics IRIG-B clock drivers; pps support)
 * Jeffrey Mogul <mogul@pa.dec.com> (ntptrace utility)
 * Steve Clift (clift@ml.csiro.au) OMEGA clock driver)
 * Mike Iglesias (iglesias@uci.edu) (DEC Alpha changes)
 * Mark Andrews <marka@syd.dms.csiro.au> (Leitch atomic clock controller)
 * George Lindholm <lindholm@ucs.ubc.ca> (port to SunOS 5.1 operating system)
 * Jeff Johnson <jbj@chatham.usdesign.com> (massive prototyping overhaul)
 * Tom Moore <tmoore@fievel.daytonoh.ncr.com> (port to i386 svr4)
 * Piete Brooks <Piete.Brooks@cl.cam.ac.uk> (MSF clock driver, Trimble PARSE
 * 	support)
 * Karl Berry <karl@owl.HQ.ileaf.com> (syslog to file option)
 * Torsten Duwe <duwe@immd4.informatik.uni-erlangen.de> (Linux Port)
 * Paul A Vixie <vixie@vix.com> (TrueTime GPS driver)
 * Jim Jagielski <jim@jagubox.gsfc.nasa.gov> (A/UX port)
 * Ray Schnitzler <schnitz@unipress.com> (First pass at a Unixware1 port.)
 * Ajit Thyagarajan <ajit@ee.udel.edu> (IP multicast support)
 * Jeff Steinman <jss@pebbles.jpl.nasa.gov> (Datum PTS clock driver)
 * Tomoaki TSURUOKA <tsuruoka@nc.fukuoka-u.ac.jp> (TRAK clock driver)
 */