s3:auth/proto.h: add GPL/Copyright header

source3/auth/proto.h

@@ -1,3 +1,34 @@
+/*
+ *  Unix SMB/CIFS implementation.
+ *  Password and authentication handling
+ *
+ *  Copyright (C) Andrew Tridgell		1992-2001
+ *  Copyright (C) Luke Kenneth Casson Leighton	1996-2000
+ *  Copyright (C) Jeremy Allison		1997-2001
+ *  Copyright (C) John H Terpsta		1999-2001
+ *  Copyright (C) Tim Potter			2000
+ *  Copyright (C) Andrew Bartlett		2001-2003
+ *  Copyright (C) Jelmer Vernooij		2002
+ *  Copyright (C) Rafal Szczesniak		2002
+ *  Copyright (C) Gerald Carter			2003
+ *  Copyright (C) Volker Lendecke		2006,2010
+ *  Copyright (C) Michael Adam			2007
+ *  Copyright (C) Dan Sledz			2009
+ *  Copyright (C) Simo Sorce			2010
+ *
+ *  This program 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 program 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 <http://www.gnu.org/licenses/>.
+ */
 
 /* The following definitions come from auth/auth.c  */