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 FILTER_OPERATOR_LE = "le"; 
	public static final String FILTER_OPERATOR_GE = "ge"; 
	public static final String FILTER_OPERATOR_GT = "gt"; 
	public static final String FILTER_OPERATOR_BETWEEN = "between"; 
	public static final String FILTER_OPERATOR_NOT_BETWEEN = "not-between"; 
	public static final String FILTER_OPERATOR_NULL = "is-null"; 
	public static final String FILTER_OPERATOR_NOT_NULL = "is-not-null"; 
	public static final String FILTER_OPERATOR_TRUE = "is-true"; 
	public static final String FILTER_OPERATOR_FALSE = "is-false"; 
	public static final String FILTER_OPERATOR_LIKE = "like"; 
	public static final String FILTER_OPERATOR_TOP_N = "top-n"; 
	public static final String FILTER_OPERATOR_BOTTOM_N = "bottom-n"; 
	public static final String FILTER_OPERATOR_TOP_PERCENT = "top-percent"; 
	public static final String FILTER_OPERATOR_BOTTOM_PERCENT = "bottom-percent"; 
	/**
	 * @deprecated in BIRT 2.1. This operator is not supported.
	 */
	public static final String FILTER_OPERATOR_ANY = "any"; 
	public static final String FILTER_OPERATOR_MATCH = "match"; 
	public static final String FILTER_OPERATOR_NOT_LIKE = "not-like"; 
	public static final String FILTER_OPERATOR_NOT_MATCH = "not-match"; 
	public static final String FILTER_OPERATOR_IN = "in"; 
	/**
	 * columnAlign -- The column alignment The first constant is the name of
	 * columnAlign choice. The followed constants are valid choice values of
	 * columnAlign.
	 */
	public static final String CHOICE_COLUMN_ALIGN = "columnAlign"; 
	public static final String COLUMN_ALIGN_LEFT = "left"; 
	public static final String COLUMN_ALIGN_CENTER = "center";