WMSLayer new constructor

 /**
     * Builds a new WMS layer with a style name
     *
     * @param wms
     * @param layer
     * @param stylename
     */
    public WMSLayer(WebMapServer wms, Layer layer, String stylename) {
        super( new StyledWMSCoverageReader(wms, layer, stylename), STYLE );
    }