File headers: SPDX License migration

Use a shorter/simpler license convention, stops the header taking so
much space.

Follow the SPDX license specification: https://spdx.org/licenses

- C/C++/objc/objc++
- Python
- Shell Scripts
- CMake, GNUmakefile

While most of the source tree has been included

- `./extern/` was left out.
- `./intern/cycles` & `./intern/atomic` are also excluded because they
  use different header conventions.

doc/license/SPDX-license-identifiers.txt has been added to list SPDX all
used identifiers.

See P2788 for the script that automated these edits.

Reviewed By: brecht, mont29, sergey

Ref D14069

12 files changed, 17 insertions, 154 deletions

diff --git a/intern/guardedalloc/CMakeLists.txt b/intern/guardedalloc/CMakeLists.txt
index 88c6e7ca2c5..3329e4bf10e 100644
--- a/intern/guardedalloc/CMakeLists.txt
+++ b/intern/guardedalloc/CMakeLists.txt
@@ -1,22 +1,5 @@
-# ***** BEGIN GPL LICENSE BLOCK *****
-#
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License
-# as published by the Free Software Foundation; either version 2
-# of the License, or (at your option) any later version.
-#
-# This program 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; if not, write to the Free Software Foundation,
-# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-#
-# The Original Code is Copyright (C) 2006, Blender Foundation
-# All rights reserved.
-# ***** END GPL LICENSE BLOCK *****
+# SPDX-License-Identifier: GPL-2.0-or-later
+# Copyright 2006 Blender Foundation. All rights reserved.
 
 set(INC
   .
diff --git a/intern/guardedalloc/MEM_guardedalloc.h b/intern/guardedalloc/MEM_guardedalloc.h
index dccb7a32139..d8a8c1181e4 100644
--- a/intern/guardedalloc/MEM_guardedalloc.h
+++ b/intern/guardedalloc/MEM_guardedalloc.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program 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; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup intern_mem
diff --git a/intern/guardedalloc/cpp/mallocn.cpp b/intern/guardedalloc/cpp/mallocn.cpp
index dadaea12cfe..05fbf0bf51a 100644
--- a/intern/guardedalloc/cpp/mallocn.cpp
+++ b/intern/guardedalloc/cpp/mallocn.cpp
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program 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; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup intern_mem
diff --git a/intern/guardedalloc/intern/leak_detector.cc b/intern/guardedalloc/intern/leak_detector.cc
index 072b68fcc9f..48df71e410d 100644
--- a/intern/guardedalloc/intern/leak_detector.cc
+++ b/intern/guardedalloc/intern/leak_detector.cc
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program 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; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup intern_mem
diff --git a/intern/guardedalloc/intern/mallocn.c b/intern/guardedalloc/intern/mallocn.c
index c7b12ed3457..f7979168799 100644
--- a/intern/guardedalloc/intern/mallocn.c
+++ b/intern/guardedalloc/intern/mallocn.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program 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; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup intern_mem
diff --git a/intern/guardedalloc/intern/mallocn_guarded_impl.c b/intern/guardedalloc/intern/mallocn_guarded_impl.c
index 2720a9762bb..acad413b4c1 100644
--- a/intern/guardedalloc/intern/mallocn_guarded_impl.c
+++ b/intern/guardedalloc/intern/mallocn_guarded_impl.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program 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; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /** \file
  * \ingroup intern_mem
diff --git a/intern/guardedalloc/intern/mallocn_intern.h b/intern/guardedalloc/intern/mallocn_intern.h
index b57e11d9a8f..f8b16ff6ddf 100644
--- a/intern/guardedalloc/intern/mallocn_intern.h
+++ b/intern/guardedalloc/intern/mallocn_intern.h
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program 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; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2013 by Blender Foundation.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2013 Blender Foundation. All rights reserved. */
 
 /** \file
  * \ingroup intern_mem
diff --git a/intern/guardedalloc/intern/mallocn_lockfree_impl.c b/intern/guardedalloc/intern/mallocn_lockfree_impl.c
index 5d522f4da88..73912ad07b1 100644
--- a/intern/guardedalloc/intern/mallocn_lockfree_impl.c
+++ b/intern/guardedalloc/intern/mallocn_lockfree_impl.c
@@ -1,18 +1,4 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program 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; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /** \file
  * \ingroup intern_mem
diff --git a/intern/guardedalloc/test/simpletest/memtest.c b/intern/guardedalloc/test/simpletest/memtest.c
index 498857de8ea..dd17e88dbc1 100644
--- a/intern/guardedalloc/test/simpletest/memtest.c
+++ b/intern/guardedalloc/test/simpletest/memtest.c
@@ -1,21 +1,5 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program 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; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright 2001-2002 NaN Holding BV. All rights reserved. */
 
 /**
  * Copyright (C) 2001 NaN Technologies B.V.
diff --git a/intern/guardedalloc/tests/guardedalloc_alignment_test.cc b/intern/guardedalloc/tests/guardedalloc_alignment_test.cc
index cd19a43695c..ceda01c2fba 100644
--- a/intern/guardedalloc/tests/guardedalloc_alignment_test.cc
+++ b/intern/guardedalloc/tests/guardedalloc_alignment_test.cc
@@ -1,4 +1,4 @@
-/* Apache License, Version 2.0 */
+/* SPDX-License-Identifier: Apache-2.0 */
 
 #include "testing/testing.h"
 
diff --git a/intern/guardedalloc/tests/guardedalloc_overflow_test.cc b/intern/guardedalloc/tests/guardedalloc_overflow_test.cc
index 1424005e181..aa930373f0c 100644
--- a/intern/guardedalloc/tests/guardedalloc_overflow_test.cc
+++ b/intern/guardedalloc/tests/guardedalloc_overflow_test.cc
@@ -1,4 +1,4 @@
-/* Apache License, Version 2.0 */
+/* SPDX-License-Identifier: Apache-2.0 */
 
 #include "testing/testing.h"
 
diff --git a/intern/guardedalloc/tests/guardedalloc_test_base.h b/intern/guardedalloc/tests/guardedalloc_test_base.h
index c56cb9abe29..14fc693b9da 100644
--- a/intern/guardedalloc/tests/guardedalloc_test_base.h
+++ b/intern/guardedalloc/tests/guardedalloc_test_base.h
@@ -1,4 +1,4 @@
-/* Apache License, Version 2.0 */
+/* SPDX-License-Identifier: Apache-2.0 */
 
 #ifndef __GUARDEDALLOC_TEST_UTIL_H__
 #define __GUARDEDALLOC_TEST_UTIL_H__