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/attribute/impl/AttributePackageImpl.java
addAnnotation( getGradient_EndColor( ), source, new String[]{
				"kind", "element", 
				"name", "EndColor" 
		} );
		addAnnotation( getGradient_Direction( ), source, new String[]{
				"kind", "element", 
				"name", "Direction" 
		} );
		addAnnotation( getGradient_Cyclic( ), source, new String[]{
				"kind", "element", 
				"name", "Cyclic" 
		} );
		addAnnotation( getGradient_Transparency( ), source, new String[]{
				"kind", "element", 
				"name", "Transparency" 
		} );
		addAnnotation( groupingUnitTypeEEnum, source, new String[]{
				"name", "GroupingUnitType" 
		} );
		addAnnotation( groupingUnitTypeObjectEDataType, source, new String[]{
				"name", "GroupingUnitType:Object", 
				"baseType", "GroupingUnitType" 
		} );
		addAnnotation( horizontalAlignmentEEnum, source, new String[]{
				"name", "HorizontalAlignment" 
		} );
		addAnnotation( horizontalAlignmentObjectEDataType,
				source,
				new String[]{
						"name", "HorizontalAlignment:Object",