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
URL url = null;
		if ( reportDesign != null )
		{
			url = reportDesign.findResource( fileName,
					IResourceLocator.LIBRARY );
		}
		if (url == null)
		{
			return;
		}
		
		
		try
		{
			InputStream in = url.openStream( );
			ByteArrayOutputStream out = new ByteArrayOutputStream( );
			byte[] buffer = new byte[1024];
			int size = in.read( buffer );
			while ( size != -1 )
			{
				out.write( buffer, 0, size );
				size = in.read( buffer );
			}
			byte[] script = out.toByteArray( );
			execute( new String( script, "UTF-8" ), fileName, 1 ); 
			in.close( );
		}
		catch ( IOException ex )
		{
			log.log( Level.SEVERE,