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/TypePackageImpl.java
* @generated
	 */
	private TypePackageImpl( )
	{
		super( eNS_URI, TypeFactory.eINSTANCE );
	}
	/**
	 * <!-- begin-user-doc --> <!-- end-user-doc -->
	 * @generated
	 */
	private static boolean isInited = false;
	/**
	 * Creates, registers, and initializes the <b>Package</b> for this
	 * model, and for any others upon which it depends.  Simple
	 * dependencies are satisfied by calling this method on all
	 * dependent packages before doing anything else.  This method drives
	 * initialization for interdependent packages directly, in parallel
	 * with this package, itself.
	 * <p>Of this package and its interdependencies, all packages which
	 * have not yet been registered by their URI values are first created
	 * and registered.  The packages are then initialized in two steps:
	 * meta-model objects for all of the packages are created before any
	 * are initialized, since one package's meta-model objects may refer to
	 * those of another.
	 * <p>Invocation of this method will not affect any packages that have
	 * already been initialized.
	 * <!-- begin-user-doc --> <!-- end-user-doc -->
	 * @see #eNS_URI
	 * @see #createPackageContents()
	 * @see #initializePackageContents()