Bug 178164 Use IEngineTask.status constants and remove unnecessary status variables in EngineTask.
1)Remove following redundant variables in EngineTask used for status info. protected final int RUNNING_STATUS_START = 0; protected final int RUNNING_STATUS_RUNNING = 1; protected final int RUNNING_STATUS_STOP = 2; EngineTask already has access to constants declared in IEngineTask. Use those instead. 2)Remove the unused errorHandlingOption in EngineTask.
engine/org.eclipse.birt.report.engine/src/org/eclipse/birt/report/engine/api/impl/RenderTask.java
catch ( Throwable t )
		{
			log.log( Level.SEVERE, "Report engine can not create {0} emitter.", 
					format ); 
			throw new EngineException(
					MessageConstants.CANNOT_CREATE_EMITTER_EXCEPTION, format, t );
		}
		if ( emitter == null )
		{
			log.log( Level.SEVERE, "Report engine can not create {0} emitter.", 
					format ); 
			throw new EngineException(
					MessageConstants.CANNOT_CREATE_EMITTER_EXCEPTION, format );
		}
		
		pagination = extManager.getPagination( format );
		
		if ( !ExtensionManager.PAPER_SIZE_PAGINATION.equals( pagination ) )
		{
			emitter = new HTMLTableLayoutNestEmitter( emitter );
		}
		
		return emitter;
	}
	
	public void close( )
	{
		closeReportDocument( );
		super.close( );
	}