Bug 201368 Support "Not In" operator in filter list
Description: After we support "IN" filter we should also support the "Not In" filter. Data part has already support the "Not In" filter, so hope model can support that operator in the filter operator list. Regards!
model/org.eclipse.birt.report.model/src/org/eclipse/birt/report/model/api/elements/DesignChoiceConstants.java
public static final String SEARCH_TYPE_NONE = "none"; 
	/**
	 * exportType -- The export type for column hint The first constant is the
	 * name of exportType choice. The followed constants are valid choice values
	 * of exportType.
	 */
	public static final String CHOICE_EXPORT_TYPE = "exportType"; 
	public static final String EXPORT_TYPE_NONE = "none"; 
	public static final String EXPORT_TYPE_IF_REALIZED = "if-realized"; 
	public static final String EXPORT_TYPE_ALWAYS = "always"; 
	/**
	 * analysisType -- The analysis type for column hint The first constant is
	 * the name of analysisType choice. The followed constants are valid choice
	 * values of analysisType.
	 */
	public static final String CHOICE_ANALYSIS_TYPE = "analysisType"; 
	public static final String ANALYSIS_TYPE_AUTO = "auto"; 
	public static final String ANALYSIS_TYPE_DIMENSION = "dimension"; 
	public static final String ANALYSIS_TYPE_MEASURE = "measure"; 
	public static final String ANALYSIS_TYPE_DETAIL = "detail"; 
	public static final String ANALYSIS_TYPE_NONE = "none"; 
	/**
	 * filterOperator -- The filter operator for filter condition The first
	 * constant is the name of filterOperator choice. The followed constants are
	 * valid choice values of filterOperator.
	 */
	public static final String CHOICE_FILTER_OPERATOR = "filterOperator"; 
	public static final String FILTER_OPERATOR_EQ = "eq"; 
	public static final String FILTER_OPERATOR_NE = "ne"; 
	public static final String FILTER_OPERATOR_LT = "lt";