Update the COPYRIGHT file to include FreeBSD's compilation copyright

by the pseudonymous author "The FreeBSD Project."  This is long
overdue.  I've left the 4.4BSD copyright information intact since much
of our code base is derived from 4.4BSD-Lite.

Prodded by: phk on more occasions than can be counted.

COPYRIGHT

@@ -1,6 +1,35 @@
 # $FreeBSD$
 #	@(#)COPYRIGHT	8.2 (Berkeley) 3/21/94
 
+The compilation of software known as FreeBSD is distributed under the
+following terms:
+
+Copyright (C) 1992-2004 The FreeBSD Project. 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.
+
+THIS SOFTWARE IS PROVIDED BY AUTHOR AND CONTRIBUTORS ``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 AUTHOR OR CONTRIBUTORS 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.
+
+The 4.4BSD and 4.4BSD-Lite software is distributed under the following
+terms:
+
 All of the documentation and software included in the 4.4BSD and 4.4BSD-Lite
 Releases is copyrighted by The Regents of the University of California.