add license to link-warning.h

[Simon Josefsson]

Bruno, what do you think?  For rationale, I got a comment in
https://savannah.gnu.org/task/?9954 that link-warning.h lacked licensing
information.  I would have used the normal GPLv2+ license header in this
file, but it seems gnulib-tool --import --lgpl does not change it to
LGPLv2.1+ (presumably because it is in build-aux/ rather than lib/).

/Simon

>From 4a9985002d673a4984b5fb33c9d757b4d6765365 Mon Sep 17 00:00:00 2001
From: Simon Josefsson <address@hidden>
Date: Tue, 8 Dec 2009 22:14:21 +0100
Subject: [PATCH] build-aux/link-warning.h: Add license header.

---
 ChangeLog                |    4 ++++
 build-aux/link-warning.h |   20 ++++++++++++++++++++
 2 files changed, 24 insertions(+), 0 deletions(-)

diff --git a/ChangeLog b/ChangeLog
index 0afec2e..84805b5 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,7 @@
+2009-12-08  Simon Josefsson  <address@hidden>
+
+       * build-aux/link-warning.h: Add license header.
+
 2009-12-08  Jim Meyering  <address@hidden>
 
        init.sh: avoid Solaris 10 /bin/sh portability problem
diff --git a/build-aux/link-warning.h b/build-aux/link-warning.h
index fda0194..054fb2e 100644
--- a/build-aux/link-warning.h
+++ b/build-aux/link-warning.h
@@ -1,3 +1,23 @@
+/*
+ * Copyright (C) 2007, 2009  Free Software Foundation, Inc.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library 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
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301 USA
+ *
+ */
+
 /* GL_LINK_WARNING("literal string") arranges to emit the literal string as
    a linker warning on most glibc systems.
    We use a linker warning rather than a preprocessor warning, because
-- 
1.6.5.3