Function _fnCompatMap

external/.datatables.js:1750–1754

(o, knew, old)

	 *  @param {*} old The old parameter name
	 */
	var _fnCompatMap = function (o, knew, old) {
		if (o[knew] !== undefined) {
			o[old] = o[knew]
		}
	}

	/**
	 * Provide backwards compatibility for the main DT options. Note that the new