page-types: add standard GPL license header

/*

 * page-types: Tool for querying page flags

 *

 * 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; version 2.

 *

 * 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 find a copy of v2 of the GNU General Public License somewhere on

 * your Linux system; if not, write to the Free Software Foundation, Inc., 59

 * Temple Place, Suite 330, Boston, MA 02111-1307 USA.

 *

 * Copyright (C) 2009 Intel corporation

 *

 * Authors: Wu Fengguang <fengguang.wu@intel.com>

 *

 * Released under the General Public License (GPL).

 */

#define _LARGEFILE64_SOURCE