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/RunTask.java
File file = new File( reportDocName );
				if ( file.exists( ) )
				{
					if ( file.isDirectory( ) )
					{
						archive = new FolderArchiveWriter( reportDocName );
					}
					else
					{
						archive = new FileArchiveWriter( reportDocName );
					}
				}
				else
				{
					if ( reportDocName.endsWith( "\\" )
							|| reportDocName.endsWith( "/" ) )
					{
						archive = new FolderArchiveWriter( reportDocName );
					}
					else
					{
						archive = new FileArchiveWriter( reportDocName );
					}
				}
			}
			catch ( IOException e )
			{
				throw new EngineException( e.getLocalizedMessage( ) );
			}
			doRun( );