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
int EMBEDDED_IMAGE__DATA = IMAGE_FEATURE_COUNT + 0;
	/**
	 * The number of structural features of the '<em>Embedded Image</em>' class.
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 * @ordered
	 */
	int EMBEDDED_IMAGE_FEATURE_COUNT = IMAGE_FEATURE_COUNT + 1;
	/**
	 * The feature id for the '<em><b>Name</b></em>' attribute. <!--
	 * begin-user-doc --> <!-- end-user-doc -->
	 * 
	 * @generated
	 * @ordered
	 */
	int EXTENDED_PROPERTY__NAME = 0;
	/**
	 * The feature id for the '<em><b>Value</b></em>' attribute. <!--
	 * begin-user-doc --> <!-- end-user-doc -->
	 * 
	 * @generated
	 * @ordered
	 */
	int EXTENDED_PROPERTY__VALUE = 1;
	/**
	 * The number of structural features of the '<em>Extended Property</em>' class.
	 * <!-- begin-user-doc --> <!-- end-user-doc -->
	 * @generated
	 * @ordered