コマンドライン引数の解析

Command line arguments parser

Authors:	Yasuhiro MORIKAWA
Version:	$Id: dc_args.f90,v 1.2 2009-08-09 06:53:11 morikawa Exp $
Tag Name:	$Name: gtool5-20100924 $
Copyright:	Copyright (C) GFD Dennou Club, 2005. All rights reserved.
License:	See COPYRIGHT

This file provides the following module.