update LGPL[23]+ and GPL[23]+ SPDX tags

ack -l --no-svg "SPDX-License-Identifier: GPL-3.0\+" | xargs sed -i "s/SPDX-License-Identifier: GPL-3.0+/SPDX-License-Identifier: GPL-3.0-or-later/"
ack -l --no-svg "SPDX-License-Identifier: LGPL-3.0\+" | xargs sed -i "s/SPDX-License-Identifier: LGPL-3.0+/SPDX-License-Identifier: LGPL-3.0-or-later/"
ack -l --no-svg "SPDX-License-Identifier: GPL-2.0\+" | xargs sed -i "s/SPDX-License-Identifier: GPL-2.0+/SPDX-License-Identifier: GPL-2.0-or-later/"
ack -l --no-svg "SPDX-License-Identifier: LGPL-2.0\+" | xargs sed -i "s/SPDX-License-Identifier: LGPL-2.0+/SPDX-License-Identifier: LGPL-2.0-or-later/"

Scripts/developer_scripts/check_licenses

@@ -20,7 +20,7 @@
 #
 # $URL$
 # $Id$
-# SPDX-License-Identifier: LGPL-3.0+
+# SPDX-License-Identifier: LGPL-3.0-or-later
 #
 # Author(s)     : Joachim Reichel <joachim.reichel@gmx.de>
 #                 Laurent Rineau

Scripts/developer_scripts/create_internal_release

@@ -281,7 +281,7 @@ sub create_version_file()
 // This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
 // WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
 //
-// SPDX-License-Identifier: LGPL-3.0+
+// SPDX-License-Identifier: LGPL-3.0-or-later
 //
 // Author(s)     : -
 

Scripts/developer_scripts/licensecheck

@@ -19,7 +19,7 @@
 # You should have received a copy of the GNU General Public License along
 # with this program. If not, see <https://www.gnu.org/licenses/>.
 #
-# SPDX-License-Identifier: LGPL-2.0+
+# SPDX-License-Identifier: LGPL-2.0-or-later
 #
 
 =head1 NAME

Scripts/developer_scripts/list_cgal_includes

@@ -19,7 +19,7 @@
 #
 # $URL$
 # $Id$
-# SPDX-License-Identifier: LGPL-3.0+
+# SPDX-License-Identifier: LGPL-3.0-or-later
 #
 # Author(s)     : 
 

Scripts/developer_scripts/test_license_check/ImageIO.h

@@ -16,7 +16,7 @@
 // $URL: svn+ssh://scm.gforge.inria.fr/svn/cgal/branches/releases/CGAL-4.1-branch/CGALimageIO/include/CGAL/ImageIO.h $
 // $Id: ImageIO.h 67097 2012-01-13 13:36:56Z lrineau $
 //
-// SPDX-License-Identifier: LGPL-3.0+
+// SPDX-License-Identifier: LGPL-3.0-or-later
 //
 
 #ifndef IMAGEIO_H

Scripts/developer_scripts/test_license_check/min_dihedral_angle.h

@@ -14,7 +14,7 @@
 //
 // $URL$
 // $Id$
-// SPDX-License-Identifier: GPL-3.0+
+// SPDX-License-Identifier: GPL-3.0-or-later
 //
 // Author(s)     : Laurent RINEAU, Stephane Tayeb
 

Scripts/developer_scripts/test_license_check/test-gpl.h

@@ -9,7 +9,7 @@
 // Licensees holding a valid commercial license may use this file in
 // accordance with the commercial license agreement provided with the software.
 //
-// SPDX-License-Identifier: GPL-3.0+
+// SPDX-License-Identifier: GPL-3.0-or-later
 //
 // This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
 // WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.

Scripts/developer_scripts/test_license_check/test-lgpl.h

@@ -16,5 +16,5 @@
 // This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
 // WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
 //
-// SPDX-License-Identifier: LGPL-3.0+
+// SPDX-License-Identifier: LGPL-3.0-or-later
 //