Bug 183733 Implement the IScriptOjectClassInfo to provide the class infromation to support the JS code assistant.
Engine should implement the IScriptObjectClassInfo interface to return the class information for script object.
engine/org.eclipse.birt.report.engine/src/org/eclipse/birt/report/engine/executor/ExecutionContext.java
* Global configuration variables
	 */
	private Map configs = new BirtHashMap( );
	/**
	 * Report parameters used to create the report content
	 */
	private Map params = new BirtHashMap( );
	private Map persistentBeans = new HashMap( );
	private Map transientBeans = new HashMap( );
	private ReportDocumentWriter docWriter;
	/**
	 * app context
	 */
	private Map appContext;
	/**
	 * report context used to evaluate the java-based script.
	 */
	private IReportContext reportContext;
	/**
	 * options used to render the report content
	 */
	private IRenderOption renderOption;
	/**
	 * the current locale, used to localize the report content
	 */
	private Locale locale;
	
	/**
	 * report document, may be the output or input.
	 */