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/ModuleUtil.java
*         value.
	 * 
	 */
	public static boolean isListFilterValue( FilterConditionHandle filter )
	{
		if ( filter == null )
			return false;
		if ( DesignChoiceConstants.FILTER_OPERATOR_IN.equals( filter.getOperator( ) ) )
			return true;
		return false;
	}
	/**
	 * Determine if the value1 of this filter condition is a list.
	 * 
	 * @param filter
	 *            the filter need to check
	 * @return true if the value1 value is a list, false if it is a single
	 *         value.
	 * 
	 */
	public static boolean isListFilterValue( FilterConditionElementHandle filter )
	{
		if ( filter == null )
			return false;
		if ( DesignChoiceConstants.FILTER_OPERATOR_IN.equals( filter.getOperator( ) ) )
			return true;
		return false;
	}
}