Add proper license header.

Originally committed as revision 9444 to svn://svn.ffmpeg.org/ffmpeg/trunk

libavutil/sha1.c

@@ -1,6 +1,23 @@
-// SHA-1 code Copyright 2007 Michael Nidermayer <michaelni@gmx.at>
-// license LGPL
-// based on public domain SHA-1 code by Steve Reid <steve@edmweb.com>
+/*
+ * Copyright (C) 2007 Michael Niedermayer <michaelni@gmx.at>
+ * based on public domain SHA-1 code by Steve Reid <steve@edmweb.com>
+ *
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg 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.
+ *
+ * FFmpeg 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 FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
 
 #include "common.h"
 #include "bswap.h"

libavutil/sha1.h

@@ -1,3 +1,23 @@
+/*
+ * Copyright (C) 2007 Michael Niedermayer <michaelni@gmx.at>
+ *
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg 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.
+ *
+ * FFmpeg 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 FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
 #ifndef AV_SHA1_H
 #define AV_SHA1_H