Quantity database API:

    public QuantityDB QuantityDBManager.instance()

    public void QuantityDBManager.setInstance(QuantityDB instance)

    // public void QuantityDBManager.setFactory(QuantityDBFactory factory)

    MetQuantityDB.initialize()
    {
	String[]		definitions =
	    new String[]
	    {
		"DewPoint", "Cel",
		"PotentialTemperature", "K",
		"SaturationEquivalentPotentialTemperature", "K",
		"SaturationMixingRatio", "g/kg",
		"U", "m/s",
		"V", "m/s",
		"W", "m/s",
		"VirtualTemperature", "K",
		...
	    };
	String[]		aliases =
	    new String[]
	    {
		"PressureReducedToMSL", "Pressure",
		"Theta", "PotentialTemperature",
		"ThetaES", "SaturationEquivalentPotentialTemperature",
		"Rsat", "SaturationMixingRatio",
		...
	    };
	QuantityDBManager.setInstance(
	    QuantityDBManager.instance().add(definitions, aliases));
    }
