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
/**
	 * <!-- begin-user-doc --> <!-- end-user-doc -->
	 * @generated
	 */
	public NotificationChain basicSetShadowColor(
			ColorDefinition newShadowColor, NotificationChain msgs )
	{
		ColorDefinition oldShadowColor = shadowColor;
		shadowColor = newShadowColor;
		if ( eNotificationRequired( ) )
		{
			ENotificationImpl notification = new ENotificationImpl( this,
					Notification.SET,
					TypePackage.LINE_SERIES__SHADOW_COLOR,
					oldShadowColor,
					newShadowColor );
			if ( msgs == null )
				msgs = notification;
			else
				msgs.add( notification );
		}
		return msgs;
	}
	/**
	 * <!-- begin-user-doc --> <!-- end-user-doc -->
	 * @generated
	 */
	public void setShadowColor( ColorDefinition newShadowColor )
	{
		if ( newShadowColor != shadowColor )