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/LineSeries.java
* 
	 * @return the value of the '<em>Marker</em>' containment reference.
	 * @see #setMarker(Marker)
	 * @see org.eclipse.birt.chart.model.type.TypePackage#getLineSeries_Marker()
	 * @model containment="true" resolveProxies="false"
	 * @generated
	 */
	Marker getMarker( );
	/**
	 * Sets the value of the '{@link org.eclipse.birt.chart.model.type.LineSeries#getMarker <em>Marker</em>}' containment reference.
	 * <!-- begin-user-doc --> <!-- end-user-doc -->
	 * @param value the new value of the '<em>Marker</em>' containment reference.
	 * @see #getMarker()
	 * @generated
	 */
	void setMarker( Marker value );
	/**
	 * Returns the value of the '<em><b>Line Attributes</b></em>' containment reference. <!-- begin-user-doc -->
	 * <!-- end-user-doc --> <!-- begin-model-doc -->
	 * 
	 * Specifies the attributes for the line used to represent this series.
	 * 
	 * <!-- end-model-doc -->
	 * 
	 * @return the value of the '<em>Line Attributes</em>' containment reference.
	 * @see #setLineAttributes(LineAttributes)
	 * @see org.eclipse.birt.chart.model.type.TypePackage#getLineSeries_LineAttributes()
	 * @model containment="true" resolveProxies="false"
	 * @generated
	 */