Bug 212505 Use default script ID to skip script debugging
In Dte side, when compile or evaluate java script, it would pass in a script source id. This kind of id is currenlty used by report script debugger. So to skip redundant processing for such kind of internal script evaluating, dte need pass in a default ID, which is defined as ScriptExpression.defaultID. If this id is already used for particular meaning and it can not pass in the default ID, we need define them as public constants and let script debugger check and skip them as well.
data/org.eclipse.birt.data/src/org/eclipse/birt/data/engine/expression/ExprEvaluateUtil.java
* @return the value of raw data type, Java or Java Script
	 * @throws BirtException
	 */
	public static Object evaluateRawExpression( IBaseExpression dataExpr,
			Scriptable scope ) throws BirtException
	{
		return doEvaluateRawExpression( dataExpr, scope, false );
	}
	
	/**
	 * @param dataExpr
	 * @param scope
	 * @return the value of Java data type
	 * @throws BirtException
	 */
	public static Object evaluateRawExpression2( IBaseExpression dataExpr,
			Scriptable scope ) throws BirtException
	{
		return doEvaluateRawExpression( dataExpr, scope, true );
	}
	
	/**
	 * @param dataExpr
	 * @param scope
	 * @return
	 * @throws BirtException
	 */
	private static Object doEvaluateRawExpression( IBaseExpression dataExpr,
			Scriptable scope, boolean javaType ) throws BirtException
	{