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/impl/LineSeriesImpl.java
* The cached value of the '{@link #isConnectMissingValue() <em>Connect Missing Value</em>}' attribute.
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @see #isConnectMissingValue()
	 * @generated
	 * @ordered
	 */
	protected boolean connectMissingValue = CONNECT_MISSING_VALUE_EDEFAULT;
	/**
	 * This is true if the Connect Missing Value attribute has been set.
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 * @ordered
	 */
	protected boolean connectMissingValueESet = false;
	/**
	 * <!-- begin-user-doc --> <!-- end-user-doc -->
	 * @generated
	 */
	protected LineSeriesImpl( )
	{
		super( );
	}
	/**
	 * <!-- begin-user-doc --> <!-- end-user-doc -->
	 * @generated
	 */
	protected EClass eStaticClass( )
	{