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/RunAndRenderTask.java
*/
	public void run( ) throws EngineException
	{
		try
		{
			runningStatus = RUNNING_STATUS_RUNNING;
			doRun( );
		}
		finally
		{
			runningStatus = RUNNING_STATUS_STOP;
		}
	}
	void doRun( ) throws EngineException
	{
		
		if ( !validateParameters( ) )
		{
			throw new EngineException(
					MessageConstants.INVALID_PARAMETER_EXCEPTION ); 
		}
		setupRenderOption( );
		loadDesign( );
		prepareDesign( );
		startFactory( );
		startRender( );
		try
		{
			IContentEmitter emitter = createContentEmitter( );
			Report reportDesign = executionContext.getReport( );