Update COPYRIGHT to match the current copyrights and licenses in the btpd

package.

COPYRIGHT

@@ -24,35 +24,23 @@ 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.
 
-Additionally, the file btpd/queue.h is distributed under the following
-terms:
+Additionally, some software included in btpd is covered by one or more of
+the following copyrights and extra conditions:
 
-Copyright (c) 1991, 1993
-The Regents of the University of California.  All rights reserved.
+Copyright (c) 2000-2004, 2006 Niels Provos <provos@citi.umich.edu>
+Copyright (c) 2003 Michael A. Davis <mike@datanerds.net>
+Copyright (c) 2006 Sun Microsystems. All rights reserved.
+Copyright (c) 2006 Mathew Mills <mathewmills@mac.com>
+Copyright (c) 2005 Nick Mathewson <nickm@freehaven.net>
+Copyright (c) 2000 Dug Song <dugsong@monkey.org>
+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.
-4. Neither the name of the University nor the names of its contributors
-   may be used to endorse or promote products derived from this software
-   without specific prior written permission.
+3. The name of the author may not be used to endorse or promote products
+   derived from this software without specific prior written permission.
 
-THIS SOFTWARE IS PROVIDED BY THE REGENTS 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 THE REGENTS 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.
+Copyright (c) 1982, 1986, 1991, 1993
+        The Regents of the University of California. All rights reserved.
 
-Also the ACX_PTHREAD macro in the file acinclude.m4 is distributed under
-the GPLWithACException license detailed on the Autoconf Macro Archive site.
+3. Neither the name of the University nor the names of its contributors
+   may be used to endorse or promote products derived from this software
+   without specific prior written permission.