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
/**
	 * @return
	 */
	private static NameSet getVerticalPositionSet( )
	{
		String prefix = "Position."; 
		String suffix = ".displayName"; 
		return new NameSet( prefix, suffix, new String[]{
				Position.ABOVE_LITERAL.getName( ),
				Position.BELOW_LITERAL.getName( ),
		} );
	}
	/**
	 * @return
	 */
	private static NameSet getInoutPositionSet( )
	{
		String prefix = "Position."; 
		String suffix = ".displayName"; 
		return new NameSet( prefix, suffix, new String[]{
				Position.INSIDE_LITERAL.getName( ),
				Position.OUTSIDE_LITERAL.getName( ),
		} );
	}
	/**
	 * @return
	 */
	private static NameSet getFullPositionSet( )
	{
		String prefix = "Position.";