Added copyright NOTICE and project license, cleaned up notices in files

I want the legal state of the project to be clear while avoiding unnecessary
amount of boilerplate in source code (with duplicated content) which some open
source projects tend to create. The notice in source is now way smaller while
the notice in NOTICE gives much better overview of the entire project.

I hope this is a solution that respects the project's history, original author,
and all contributions made to it over the years.

1 files changed, 45 insertions, 0 deletions

diff --git a/NOTICE b/NOTICE
new file mode 100644
index 0000000..b2a0721
--- /dev/null
+++ b/NOTICE
@@ -0,0 +1,45 @@
+Starshatter: The Open Source Project
+Copyright (c) 2021-2022, Starshatter: The Open Source Project Contributors
+Copyright (c) 2011-2012, Starshatter OpenSource Distribution Contributors
+Copyright (c) 1997-2006, Destroyer Studios LLC.
+
+This program is free software: you can redistribute it and/or modify it under the terms of the 3-Clause BSD License.
+This program is distributed WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A
+PARTICULAR PURPOSE.
+
+You should have received a copy of the 3-Clause BSD License along with this program. If not, see
+<https://opensource.org/licenses/BSD-3-Clause>
+
+Previously published in 2011-2012 as: Starshatter OpenSource Distribution
+Previously published in 2006 as: Starshatter: The Gathering Storm
+Previously published in 2004 as: Starshatter - Ultimate Space Combat
+
+
+Starshatter: The Open Source Project uses libpng:
+Copyright (c) 1998-2011, Glenn Randers-Pehrson
+Copyright (c) 1996, 1997, Andreas Dilger
+Copyright (c) 1995, 1996, Guy Eric Shalnat, Group 42, Inc.
+libpng is released under the libpng license.
+See <contrib/libpng/LICENSE>.
+
+
+Starshatter: The Open Source Project uses ogg:
+Copyright (c) 2002, Xiph.org Foundation
+ogg is released under the 3-Clause BSD License.
+See <contrib/ogg/COPYING>.
+
+
+Starshatter: The Open Source Project uses OPCODE:
+Copyright (c) 2001, Pierre Terdiman
+
+
+Starshatter: The Open Source Project uses vorbis:
+Copyright (c) 2002-2018, Xiph.org Foundation
+vorbis is released under the 3-Clause BSD License.
+See <contrib/vorbis/COPYING>.
+
+
+Starshatter: The Open Source Project uses zlib:
+Copyright (c) 1995-2017, Jean-loup Gailly and Mark Adler
+zlib is released under the zlib license.
+See <contrib/zlib/zlib.h>.