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/EngineTask.java
{
				return;
			}
		} while ( waitingTime < 5000 );
		return;
	}
	
	public boolean getCancelFlag( )
	{
		return cancelFlag;
	}
	public void setErrorHandlingOption( int option )
	{
		if ( option == CANCEL_ON_ERROR )
		{
			this.errorHandlingOption = CANCEL_ON_ERROR;
			executionContext.setCancelOnError( true );
		}
		else
		{
			this.errorHandlingOption = CONTINUE_ON_ERROR;
			executionContext.setCancelOnError( false );
		}
	}
	
	/**
	 * class used to visit all parameters
	 * 
	 */
	static abstract class ParameterVisitor