Replace pqueue with code from hashsig heap

I accidentally wrote a separate priority queue implementation when
I was working on file rename detection as part of the file hash
signature calculation code.  To simplify licensing terms, I just
adapted that to a general purpose priority queue and replace the
old priority queue implementation that was borrowed from elsewhere.

This also removes parts of the COPYING document that no longer
apply to libgit2.

1 files changed, 1 insertions, 74 deletions

diff --git a/COPYING b/COPYING
index f7e9f3af7..181737284 100644
--- a/COPYING
+++ b/COPYING
@@ -388,19 +388,7 @@ Copyright (C) 1995-2010 Jean-loup Gailly and Mark Adler
 
 ----------------------------------------------------------------------
 
-The priority queue implementation is based on code licensed under the
-Apache 2.0 license:
-
-	Copyright 2010 Volkan Yazıcı <volkan.yazici@gmail.com>
-	Copyright 2006-2010 The Apache Software Foundation
-
-The full text of the Apache 2.0 license is available at:
-
-	http://www.apache.org/licenses/LICENSE-2.0
-
-----------------------------------------------------------------------
-
-The Clay framework is licensed under the MIT license:
+The Clar framework is licensed under the MIT license:
 
 Copyright (C) 2011 by Vicent Marti
 
@@ -930,64 +918,3 @@ necessary.  Here is a sample; alter the names:
 That's all there is to it!
 
 ----------------------------------------------------------------------
-
-Portions of src/win32/posix_w32.c are derrived from link_win32.c in PHP:
-
--------------------------------------------------------------------- 
-                  The PHP License, version 3.01
-Copyright (c) 1999 - 2012 The PHP Group. All rights reserved.
--------------------------------------------------------------------- 
-
-Redistribution and use in source and binary forms, with or without
-modification, is 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 "PHP" must not be used to endorse or promote products
-     derived from this software without prior written permission. For
-     written permission, please contact group@php.net.
-  
-  4. Products derived from this software may not be called "PHP", nor
-     may "PHP" appear in their name, without prior written permission
-     from group@php.net.  You may indicate that your software works in
-     conjunction with PHP by saying "Foo for PHP" instead of calling
-     it "PHP Foo" or "phpfoo"
- 
-  5. The PHP Group may publish revised and/or new versions of the
-     license from time to time. Each version will be given a
-     distinguishing version number.
-     Once covered code has been published under a particular version
-     of the license, you may always continue to use it under the terms
-     of that version. You may also choose to use such covered code
-     under the terms of any subsequent version of the license
-     published by the PHP Group. No one other than the PHP Group has
-     the right to modify the terms applicable to covered code created
-     under this License.
-
-  6. Redistributions of any form whatsoever must retain the following
-     acknowledgment:
-     "This product includes PHP software, freely available from
-     <http://www.php.net/software/>".
-
-THIS SOFTWARE IS PROVIDED BY THE PHP DEVELOPMENT TEAM ``AS IS'' AND 
-ANY EXPRESSED 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 PHP
-DEVELOPMENT TEAM OR ITS 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.
-
--------------------------------------------------------------------- 
-