Add GPL-3.0-or-later SPDX identifier to all scripts

Add the SPDX license identifier GPL-3.0-or-later to the header of all
scripts without a specific license and upgrading those that are stated
as GPL-2.0 to become GPL-3.0-or-later.

1 files changed, 3 insertions, 2 deletions

diff --git a/lib/common.sh b/lib/common.sh
index 12604d8..0092a45 100644
--- a/lib/common.sh
+++ b/lib/common.sh
@@ -1,7 +1,8 @@
 #!/hint/bash
+#
 # This may be included with or without `set -euE`
-
-# License: Unspecified
+#
+# SPDX-License-Identifier: GPL-3.0-or-later
 
 [[ -z ${_INCLUDE_COMMON_SH:-} ]] || return 0
 _INCLUDE_COMMON_SH="$(set +o|grep nounset)"