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( markerTypeObjectEDataType, source, new String[]{
				"name", "MarkerType:Object", 
				"baseType", "MarkerType" 
		} );
		addAnnotation( numberFormatSpecifierEClass, source, new String[]{
				"name", "NumberFormatSpecifier", 
				"kind", "elementOnly" 
		} );
		addAnnotation( getNumberFormatSpecifier_Prefix( ),
				source,
				new String[]{
						"kind", "element", 
						"name", "Prefix" 
				} );
		addAnnotation( getNumberFormatSpecifier_Suffix( ),
				source,
				new String[]{
						"kind", "element", 
						"name", "Suffix" 
				} );
		addAnnotation( getNumberFormatSpecifier_Multiplier( ),
				source,
				new String[]{
						"kind", "element", 
						"name", "Multiplier" 
				} );
		addAnnotation( getNumberFormatSpecifier_FractionDigits( ),
				source,
				new String[]{
						"kind", "element",