飽和比湿の算出

Evaluate saturation specific humidity

Authors:	Yoshiyuki O. Takahashi
Version:	$Id: saturate.F90,v 1.5 2014-02-14 08:12:21 yot Exp $
Tag Name:	$Name: dcpam5-20140228 $
Copyright:	Copyright (C) GFD Dennou Club, 2008. All rights reserved.
License:	See COPYRIGHT

This file provides the following module.