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.ui.extension/src/org/eclipse/birt/chart/ui/swt/type/LineChart.java
{
		StringTokenizer strtok = new StringTokenizer( sOldRepresentation, "," ); 
		StringBuffer sbNewRepresentation = new StringBuffer( "" ); 
		while ( strtok.hasMoreTokens( ) )
		{
			String sElement = strtok.nextToken( ).trim( );
			if ( !sElement.startsWith( "'" ) ) 
			{
				sbNewRepresentation.append( "'" ); 
				sbNewRepresentation.append( sElement );
				sbNewRepresentation.append( "'" ); 
			}
			else
			{
				sbNewRepresentation.append( sElement );
			}
			sbNewRepresentation.append( "," ); 
		}
		return sbNewRepresentation.toString( ).substring( 0,
				sbNewRepresentation.length( ) - 1 );
	}
	private String getConvertedOrthogonalSampleDataRepresentation(
			String sOldRepresentation )
	{
		StringTokenizer strtok = new StringTokenizer( sOldRepresentation, "," ); 
		StringBuffer sbNewRepresentation = new StringBuffer( "" ); 
		while ( strtok.hasMoreTokens( ) )
		{
			String sElement = strtok.nextToken( ).trim( );
			if ( sElement.startsWith( "H" ) )