builds/meson/*: Add copyright boilerplate.

builds/meson/extract_freetype_version.py

@@ -1,4 +1,14 @@
 #!/usr/bin/env python
+#
+# Copyright (C) 2020 by
+# David Turner, Robert Wilhelm, and Werner Lemberg.
+#
+# This file is part of the FreeType project, and may only be used, modified,
+# and distributed under the terms of the FreeType project license,
+# LICENSE.TXT.  By continuing to use, modify, or distribute this file you
+# indicate that you have read the license and understand and accept it
+# fully.
+
 """Extract the FreeType version numbers from `<freetype/freetype.h>`.
 
 This script parses the header to extract the version number defined there.

builds/meson/extract_libtool_version.py

@@ -1,4 +1,14 @@
 #!/usr/bin/env python
+#
+# Copyright (C) 2020 by
+# David Turner, Robert Wilhelm, and Werner Lemberg.
+#
+# This file is part of the FreeType project, and may only be used, modified,
+# and distributed under the terms of the FreeType project license,
+# LICENSE.TXT.  By continuing to use, modify, or distribute this file you
+# indicate that you have read the license and understand and accept it
+# fully.
+
 """Extract the libtool version from `configure.raw`.
 
 This script parses the `configure.raw` file to extract the libtool version

builds/meson/generate_reference_docs.py

@@ -1,4 +1,14 @@
 #!/usr/bin/env python
+#
+# Copyright (C) 2020 by
+# David Turner, Robert Wilhelm, and Werner Lemberg.
+#
+# This file is part of the FreeType project, and may only be used, modified,
+# and distributed under the terms of the FreeType project license,
+# LICENSE.TXT.  By continuing to use, modify, or distribute this file you
+# indicate that you have read the license and understand and accept it
+# fully.
+
 """Generate FreeType reference documentation."""
 
 from __future__ import print_function

builds/meson/parse_modules_cfg.py

@@ -1,4 +1,14 @@
 #!/usr/bin/env python
+#
+# Copyright (C) 2020 by
+# David Turner, Robert Wilhelm, and Werner Lemberg.
+#
+# This file is part of the FreeType project, and may only be used, modified,
+# and distributed under the terms of the FreeType project license,
+# LICENSE.TXT.  By continuing to use, modify, or distribute this file you
+# indicate that you have read the license and understand and accept it
+# fully.
+
 """Parse modules.cfg and dump its output either as ftmodule.h or a list of
 base extensions.
 """

builds/meson/process_ftoption_h.py

@@ -1,4 +1,14 @@
-#!/usr/bin/python
+#!/usr/bin/env python
+#
+# Copyright (C) 2020 by
+# David Turner, Robert Wilhelm, and Werner Lemberg.
+#
+# This file is part of the FreeType project, and may only be used, modified,
+# and distributed under the terms of the FreeType project license,
+# LICENSE.TXT.  By continuing to use, modify, or distribute this file you
+# indicate that you have read the license and understand and accept it
+# fully.
+
 """Toggle settings in `ftoption.h` file based on command-line arguments.
 
 This script takes an `ftoption.h` file as input and rewrites