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/impl/MarkerImpl.java
msgs );
			if ( newIconPalette != null )
				msgs = ( (InternalEObject) newIconPalette ).eInverseAdd( this,
						EOPPOSITE_FEATURE_BASE
								- AttributePackage.MARKER__ICON_PALETTE,
						null,
						msgs );
			msgs = basicSetIconPalette( newIconPalette, msgs );
			if ( msgs != null )
				msgs.dispatch( );
		}
		else if ( eNotificationRequired( ) )
			eNotify( new ENotificationImpl( this,
					Notification.SET,
					AttributePackage.MARKER__ICON_PALETTE,
					newIconPalette,
					newIconPalette ) );
	}
	/**
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 */
	public NotificationChain eInverseRemove( InternalEObject otherEnd,
			int featureID, NotificationChain msgs )
	{
		switch ( featureID )
		{
			case AttributePackage.MARKER__ICON_PALETTE :
				return basicSetIconPalette( null, msgs );