String logFileProp = System.getProperty(EclipseStarter.PROP_LOGFILE);
String logFileProp = FrameworkProperties.getProperty(EclipseStarter.PROP_LOGFILE);
	private FrameworkLog createPerformanceLog() {		String logFileProp = System.getProperty(EclipseStarter.PROP_LOGFILE);		if (logFileProp != null) {			int lastSlash = logFileProp.lastIndexOf(File.separatorChar);			if (lastSlash > 0) {				String logFile = logFileProp.substring(0, lastSlash + 1) + "performance.log"; //$NON-NLS-1$				return new EclipseLog(new File(logFile));			}		}		//if all else fails, write to std err		return new EclipseLog(new PrintWriter(System.err));	}