Copyright 2001 The Aerospace Corporation.  All rights reserved.

 Redistribution and use in source and binary forms, with or without
 modification, are permitted provided that the following conditions
 are met:

 1.  Redistributions of source code must retain the above copyright
     notice, this list of conditions, and the following disclaimer.
 2.  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.
 3.  The name of The Aerospace Corporation may not be used to endorse or
     promote products derived from this software.

 THIS SOFTWARE IS PROVIDED BY THE AEROSPACE CORPORATION "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 AEROSPACE CORPORATION 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.

 Copyright (c) 1996-1999 Whistle Communications, Inc.
 All rights reserved.

 Subject to the following obligations and disclaimer of warranty, use and
 redistribution of this software, in source or object code forms, with or
 without modifications are expressly permitted by Whistle Communications;
 provided, however, that:
 1. Any and all reproductions of the source or object code must include the
    copyright notice above and the following disclaimer of warranties; and
 2. No rights are granted, in any manner or form, to use Whistle
    Communications, Inc. trademarks, including the mark "WHISTLE
    COMMUNICATIONS" on advertising, endorsements, or otherwise except as
    such appears in the above copyright notice or in the software.

 THIS SOFTWARE IS BEING PROVIDED BY WHISTLE COMMUNICATIONS "AS IS", AND
 TO THE MAXIMUM EXTENT PERMITTED BY LAW, WHISTLE COMMUNICATIONS MAKES NO
 REPRESENTATIONS OR WARRANTIES, EXPRESS OR IMPLIED, REGARDING THIS SOFTWARE,
 INCLUDING WITHOUT LIMITATION, ANY AND ALL IMPLIED WARRANTIES OF
 MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT.
 WHISTLE COMMUNICATIONS DOES NOT WARRANT, GUARANTEE, OR MAKE ANY
 REPRESENTATIONS REGARDING THE USE OF, OR THE RESULTS OF THE USE OF THIS
 SOFTWARE IN TERMS OF ITS CORRECTNESS, ACCURACY, RELIABILITY OR OTHERWISE.
 IN NO EVENT SHALL WHISTLE COMMUNICATIONS BE LIABLE FOR ANY DAMAGES
 RESULTING FROM OR ARISING OUT OF ANY USE OF THIS SOFTWARE, INCLUDING
 WITHOUT LIMITATION, ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY,
 PUNITIVE, OR CONSEQUENTIAL DAMAGES, PROCUREMENT OF SUBSTITUTE GOODS OR
 SERVICES, LOSS OF USE, DATA OR PROFITS, HOWEVER CAUSED AND UNDER 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 WHISTLE COMMUNICATIONS IS ADVISED OF THE POSSIBILITY
 OF SUCH DAMAGE.

 Author:		Brooks Davis <brooks@FreeBSD.org>
 Derived from:	ng_hole.4