Cleanup legal data

1. The license header is technically not valid if it doesn't have a
copyright signature.

2. The COPYING file has been updated with the different licenses used in
the project.

3. The full GPLv2 header in each file annoys me.

10 files changed, 48 insertions, 98 deletions

diff --git a/src/win32/dir.c b/src/win32/dir.c
index 069a41c3..01339577 100644
--- a/src/win32/dir.c
+++ b/src/win32/dir.c
@@ -1,3 +1,9 @@
+/*
+ * Copyright (C) 2009-2011 the libgit2 contributors
+ *
+ * This file is part of libgit2, distributed under the GNU GPL v2 with
+ * a Linking Exception. For full terms see the included COPYING file.
+ */
 #define GIT__WIN32_NO_WRAP_DIR
 #include "dir.h"
 
diff --git a/src/win32/fnmatch.c b/src/win32/fnmatch.c
index de2f3e74..cdce057d 100644
--- a/src/win32/fnmatch.c
+++ b/src/win32/fnmatch.c
@@ -1,33 +1,8 @@
 /*
- * Copyright (c) 1989, 1993, 1994
- *      The Regents of the University of California.  All rights reserved.
+ * Copyright (C) 2009-2011 the libgit2 contributors
  *
- * This code is derived from software contributed to Berkeley by
- * Guido van Rossum.
- *
- * 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. 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.
- *
- * 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.
+ * This file is part of libgit2, distributed under the GNU GPL v2 with
+ * a Linking Exception. For full terms see the included COPYING file.
  */
 
 /*
diff --git a/src/win32/fnmatch.h b/src/win32/fnmatch.h
index 1309c6e9..2490292b 100644
--- a/src/win32/fnmatch.h
+++ b/src/win32/fnmatch.h
@@ -1,29 +1,8 @@
 /*
- * Copyright (C) 2008 The Android Open Source Project
- * All rights reserved.
+ * Copyright (C) 2009-2011 the libgit2 contributors
  *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- *  * Redistributions of source code must retain the above copyright
- *    notice, this list of conditions and the following disclaimer.
- *  * 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 THE COPYRIGHT HOLDERS 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
- * COPYRIGHT OWNER 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.
+ * This file is part of libgit2, distributed under the GNU GPL v2 with
+ * a Linking Exception. For full terms see the included COPYING file.
  */
 #ifndef INCLUDE_fnmatch__w32_h__
 #define INCLUDE_fnmatch__w32_h__
diff --git a/src/win32/map.c b/src/win32/map.c
index 76b92649..a30714c1 100644
--- a/src/win32/map.c
+++ b/src/win32/map.c
@@ -1,3 +1,9 @@
+/*
+ * Copyright (C) 2009-2011 the libgit2 contributors
+ *
+ * This file is part of libgit2, distributed under the GNU GPL v2 with
+ * a Linking Exception. For full terms see the included COPYING file.
+ */
 
 #include "map.h"
 #include <errno.h>
diff --git a/src/win32/mingw-compat.h b/src/win32/mingw-compat.h
index 64d780b1..bd12de88 100644
--- a/src/win32/mingw-compat.h
+++ b/src/win32/mingw-compat.h
@@ -1,3 +1,9 @@
+/*
+ * Copyright (C) 2009-2011 the libgit2 contributors
+ *
+ * This file is part of libgit2, distributed under the GNU GPL v2 with
+ * a Linking Exception. For full terms see the included COPYING file.
+ */
 #ifndef INCLUDE_mingw_compat__
 #define INCLUDE_mingw_compat__
 
diff --git a/src/win32/msvc-compat.h b/src/win32/msvc-compat.h
index df3e62d1..57ff8114 100644
--- a/src/win32/msvc-compat.h
+++ b/src/win32/msvc-compat.h
@@ -1,3 +1,9 @@
+/*
+ * Copyright (C) 2009-2011 the libgit2 contributors
+ *
+ * This file is part of libgit2, distributed under the GNU GPL v2 with
+ * a Linking Exception. For full terms see the included COPYING file.
+ */
 #ifndef INCLUDE_msvc_compat__
 #define INCLUDE_msvc_compat__
 
diff --git a/src/win32/posix.c b/src/win32/posix.c
index be6a7c0d..2f630499 100644
--- a/src/win32/posix.c
+++ b/src/win32/posix.c
@@ -1,3 +1,9 @@
+/*
+ * Copyright (C) 2009-2011 the libgit2 contributors
+ *
+ * This file is part of libgit2, distributed under the GNU GPL v2 with
+ * a Linking Exception. For full terms see the included COPYING file.
+ */
 #include "posix.h"
 #include "path.h"
 #include <errno.h>
diff --git a/src/win32/posix.h b/src/win32/posix.h
index 28d97895..db4ec19e 100644
--- a/src/win32/posix.h
+++ b/src/win32/posix.h
@@ -1,3 +1,9 @@
+/*
+ * Copyright (C) 2009-2011 the libgit2 contributors
+ *
+ * This file is part of libgit2, distributed under the GNU GPL v2 with
+ * a Linking Exception. For full terms see the included COPYING file.
+ */
 #ifndef INCLUDE_posix__w32_h__
 #define INCLUDE_posix__w32_h__
 
diff --git a/src/win32/pthread.c b/src/win32/pthread.c
index 41cf5b35..b613e91d 100644
--- a/src/win32/pthread.c
+++ b/src/win32/pthread.c
@@ -1,28 +1,8 @@
 /*
- * This file is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License, version 2,
- * as published by the Free Software Foundation.
+ * Copyright (C) 2009-2011 the libgit2 contributors
  *
- * In addition to the permissions in the GNU General Public License,
- * the authors give you unlimited permission to link the compiled
- * version of this file into combinations with other programs,
- * and to distribute those combinations without any restriction
- * coming from the use of this file.  (The General Public License
- * restrictions do apply in other respects; for example, they cover
- * modification of the file, and distribution when not linked into
- * a combined executable.)
- *
- * This file is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
- * General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; see the file COPYING.  If not, write to
- * the Free Software Foundation, 51 Franklin Street, Fifth Floor,
- * Boston, MA 02110-1301, USA.
- *
- *  Original code by Ramiro Polla (Public Domain)
+ * This file is part of libgit2, distributed under the GNU GPL v2 with
+ * a Linking Exception. For full terms see the included COPYING file.
  */
 
 #include "pthread.h"
diff --git a/src/win32/pthread.h b/src/win32/pthread.h
index 10949f1e..aaa226de 100644
--- a/src/win32/pthread.h
+++ b/src/win32/pthread.h
@@ -1,28 +1,8 @@
 /*
- * This file is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License, version 2,
- * as published by the Free Software Foundation.
+ * Copyright (C) 2009-2011 the libgit2 contributors
  *
- * In addition to the permissions in the GNU General Public License,
- * the authors give you unlimited permission to link the compiled
- * version of this file into combinations with other programs,
- * and to distribute those combinations without any restriction
- * coming from the use of this file.  (The General Public License
- * restrictions do apply in other respects; for example, they cover
- * modification of the file, and distribution when not linked into
- * a combined executable.)
- *
- * This file is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
- * General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; see the file COPYING.  If not, write to
- * the Free Software Foundation, 51 Franklin Street, Fifth Floor,
- * Boston, MA 02110-1301, USA.
- *
- *  Original code by Ramiro Polla (Public Domain)
+ * This file is part of libgit2, distributed under the GNU GPL v2 with
+ * a Linking Exception. For full terms see the included COPYING file.
  */
 
 #ifndef GIT_PTHREAD_H