tree-wide: add spdx header on all scripts and helpers

Even though many of those scripts are very simple, it is easier to include
the header than to try to say whether each of those files is trivial enough
not to require one.

1 files changed, 1 insertions, 0 deletions

diff --git a/configure b/configure
index 5247074b6d..fb9d01e1a7 100755
--- a/configure
+++ b/configure
@@ -1,4 +1,5 @@
 #!/usr/bin/env bash
+# SPDX-License-Identifier: LGPL-2.1-or-later
 set -e
 
 cflags=CFLAGS="$CFLAGS"