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/attribute/AttributePackage.java
* @generated
	 */
	int STYLE = 31;
	/**
	 * The feature id for the '<em><b>Font</b></em>' containment reference.
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 * @ordered
	 */
	int STYLE__FONT = 0;
	/**
	 * The feature id for the '<em><b>Color</b></em>' containment reference.
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 * @ordered
	 */
	int STYLE__COLOR = 1;
	/**
	 * The feature id for the '<em><b>Background Color</b></em>' containment reference.
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 * @ordered
	 */
	int STYLE__BACKGROUND_COLOR = 2;
	/**
	 * The feature id for the '<em><b>Background Image</b></em>' containment reference.
	 * <!-- begin-user-doc -->