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/MarkerType.java
/**
	 * The '<em><b>Crosshair</b></em>' literal value.
	 * <!-- begin-user-doc
	 * --> <!-- end-user-doc -->
	 * @see #CROSSHAIR_LITERAL
	 * @model name="Crosshair"
	 * @generated
	 * @ordered
	 */
	public static final int CROSSHAIR = 0;
	/**
	 * The '<em><b>Triangle</b></em>' literal value.
	 * <!-- begin-user-doc
	 * --> <!-- end-user-doc -->
	 * @see #TRIANGLE_LITERAL
	 * @model name="Triangle"
	 * @generated
	 * @ordered
	 */
	public static final int TRIANGLE = 1;
	/**
	 * The '<em><b>Box</b></em>' literal value.
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @see #BOX_LITERAL
	 * @model name="Box"
	 * @generated
	 * @ordered
	 */
	public static final int BOX = 2;