Bug 117149 Add additional datapoint markers
I would like to propose adding additional datapoint markers. Attached is a set of markers I would like supported.
chart/org.eclipse.birt.chart.engine/src/org/eclipse/birt/chart/model/type/TypePackage.java
* <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 * @ordered
	 */
	int LINE_SERIES__PALETTE_LINE_COLOR = ComponentPackage.SERIES_FEATURE_COUNT + 2;
	/**
	 * The feature id for the '<em><b>Curve</b></em>' attribute. <!--
	 * begin-user-doc --> <!-- end-user-doc -->
	 * 
	 * @generated
	 * @ordered
	 */
	int LINE_SERIES__CURVE = ComponentPackage.SERIES_FEATURE_COUNT + 3;
	/**
	 * The feature id for the '<em><b>Shadow Color</b></em>' containment reference.
	 * <!-- begin-user-doc --> <!-- end-user-doc -->
	 * @generated
	 * @ordered
	 */
	int LINE_SERIES__SHADOW_COLOR = ComponentPackage.SERIES_FEATURE_COUNT + 4;
	/**
	 * The feature id for the '<em><b>Connect Missing Value</b></em>' attribute.
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 * @ordered
	 */
	int LINE_SERIES__CONNECT_MISSING_VALUE = ComponentPackage.SERIES_FEATURE_COUNT + 5;
	/**