Put GPLv3+ notices in source files where appropriate.

* lib/*.{h,c}: Use GPLv3+ notice whenever the module description says
so.
* build-aux/pmccabe.css: Likewise.

1 files changed, 17 insertions, 0 deletions

diff --git a/build-aux/pmccabe.css b/build-aux/pmccabe.css
index a10ee35026..df651a5e21 100644
--- a/build-aux/pmccabe.css
+++ b/build-aux/pmccabe.css
@@ -1,3 +1,20 @@
+/* Styling for cyclomatic code complexity charts.
+
+   Copyright (C) 2008-2021 Free Software Foundation, Inc.
+
+   This file 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 3 of the License,
+   or (at your option) any later version.
+
+   This file 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, see <https://www.gnu.org/licenses/>.  */
+
 body {
     font-family: Helvetica, sans-serif;
 }