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
* Returns the meta object for the attribute '{@link org.eclipse.birt.chart.model.attribute.Image#getURL <em>URL</em>}'.
	 * <!-- begin-user-doc --> <!-- end-user-doc -->
	 * @return the meta object for the attribute '<em>URL</em>'.
	 * @see org.eclipse.birt.chart.model.attribute.Image#getURL()
	 * @see #getImage()
	 * @generated
	 */
	EAttribute getImage_URL( );
	/**
	 * Returns the meta object for class '{@link org.eclipse.birt.chart.model.attribute.Insets <em>Insets</em>}'.
	 * <!-- begin-user-doc --> <!-- end-user-doc -->
	 * @return the meta object for class '<em>Insets</em>'.
	 * @see org.eclipse.birt.chart.model.attribute.Insets
	 * @generated
	 */
	EClass getInsets( );
	/**
	 * Returns the meta object for the attribute '{@link org.eclipse.birt.chart.model.attribute.Insets#getTop <em>Top</em>}'.
	 * <!-- begin-user-doc --> <!-- end-user-doc -->
	 * @return the meta object for the attribute '<em>Top</em>'.
	 * @see org.eclipse.birt.chart.model.attribute.Insets#getTop()
	 * @see #getInsets()
	 * @generated
	 */
	EAttribute getInsets_Top( );
	/**
	 * Returns the meta object for the attribute '{@link org.eclipse.birt.chart.model.attribute.Insets#getLeft <em>Left</em>}'.
	 * <!-- begin-user-doc --> <!-- end-user-doc -->
	 * @return the meta object for the attribute '<em>Left</em>'.
	 * @see org.eclipse.birt.chart.model.attribute.Insets#getLeft()