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
EngineConfig config = context.getEngine( ).getConfig( );
			ArrayList urls = new ArrayList( );
			for ( int i = 0; i < classPathes.length; i++ )
			{
				String classPath = null;
				if ( config != null )
				{
					Object propValue = config.getProperty( classPathes[i] );
					if ( propValue instanceof String )
					{
						classPath = (String) propValue;
					}
				}
				if ( classPath == null )
				{
					classPath = System.getProperty( classPathes[i] );
				}
				if ( classPath != null && classPath.length( ) != 0 )
				{
					String[] jars = classPath.split( PROPERTYSEPARATOR, -1 );
					if ( jars != null && jars.length != 0 )
					{
						for ( int j = 0; j < jars.length; j++ )
						{
							File file = new File( jars[j] );
							try
							{
								urls.add( file.toURL( ) );
							}
							catch ( MalformedURLException e )