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/util/LiteralHelper.java
public static final NameSet leaderLineStyleSet = getLeaderLineStyleSet( );
	/**
	 * Comment for <code>anchorSet</code>
	 */
	public static final NameSet anchorSet = getAnchorSet( );
	/**
	 * Comment for <code>dateFormatDetailSet</code>
	 */
	public static final NameSet dateFormatDetailSet = getDateFormatDetailSet( );
	/**
	 * Comment for <code>dateFormatTypeSet</code>
	 */
	public static final NameSet dateFormatTypeSet = getDateFormatTypeSet( );
	/**
	 * Comment for <code>verticalTickStyleSet</code>
	 */
	public static final NameSet verticalTickStyleSet = getVerticalTickStyleSet( );
	/**
	 * Comment for <code>horizontalTickStyleSet</code>
	 */
	public static final NameSet horizontalTickStyleSet = getHorizontalTickStyleSet( );
	/**
	 * Comment for <code>fullTickStyleSet</code>
	 */
	public static final NameSet fullTickStyleSet = getFullTickStyleSet( );
	/**
	 * Comment for <code>horizontalPositionSet</code>
	 */
	public static final NameSet horizontalPositionSet = getHorizontalPositionSet( );
	/**