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/series/LineSeriesAttributeComposite.java
lblType.setLayoutData( gdLBLType );
		lblType.setText( Messages.getString( "LineSeriesAttributeComposite.Lbl.Type" ) ); 
		cmbMarkerTypes = new Combo( grpMarker, SWT.DROP_DOWN | SWT.READ_ONLY );
		GridData gdCMBMarkerTypes = new GridData( GridData.FILL_HORIZONTAL );
		cmbMarkerTypes.setLayoutData( gdCMBMarkerTypes );
		cmbMarkerTypes.addSelectionListener( this );
		cmbMarkerTypes.setEnabled( btnMarkerVisible.getSelection( ) );
		Label lblSize = new Label( grpMarker, SWT.NONE );
		GridData gdLBLSize = new GridData( );
		lblSize.setLayoutData( gdLBLSize );
		lblSize.setText( Messages.getString( "LineSeriesAttributeComposite.Lbl.Size" ) ); 
		iscMarkerSize = new IntegerSpinControl( grpMarker,
				SWT.NONE,
				( (LineSeries) series ).getMarker( ).getSize( ) );
		GridData gdISCMarkerSize = new GridData( GridData.FILL_HORIZONTAL );
		iscMarkerSize.setLayoutData( gdISCMarkerSize );
		iscMarkerSize.setMinimum( 0 );
		iscMarkerSize.setMaximum( 100 );
		iscMarkerSize.addListener( this );
		iscMarkerSize.setEnabled( btnMarkerVisible.getSelection( ) );
		grpLine = new Group( this, SWT.NONE );
		GridData gdGRPLine = new GridData( GridData.FILL_BOTH );
		gdGRPLine.horizontalSpan = 2;
		grpLine.setLayout( new FillLayout( ) );
		grpLine.setLayoutData( gdGRPLine );
		grpLine.setText( Messages.getString( "LineSeriesAttributeComposite.Lbl.Line" ) ); 
		liacLine = new LineAttributesComposite( grpLine,
				SWT.NONE,
				( (LineSeries) series ).getLineAttributes( ),
				true,