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
* <!-- end-user-doc -->
	 * @generated
	 * @ordered
	 */
	int STYLE__BACKGROUND_IMAGE = 3;
	/**
	 * The feature id for the '<em><b>Padding</b></em>' containment reference.
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 * @ordered
	 */
	int STYLE__PADDING = 4;
	/**
	 * The number of structural features of the '<em>Style</em>' class.
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 * @ordered
	 */
	int STYLE_FEATURE_COUNT = 5;
	/**
	 * The meta object id for the '{@link org.eclipse.birt.chart.model.attribute.impl.StyleMapImpl <em>Style Map</em>}' class.
	 * <!-- begin-user-doc --> <!-- end-user-doc -->
	 * @see org.eclipse.birt.chart.model.attribute.impl.StyleMapImpl
	 * @see org.eclipse.birt.chart.model.attribute.impl.AttributePackageImpl#getStyleMap()
	 * @generated
	 */
	int STYLE_MAP = 32;
	/**