Bug 313428 Use Eclipse tracing to enable debug output
bundles/org.eclipse.e4.ui.workbench/src/org/eclipse/e4/workbench/ui/internal/Activator.java
locationTracker = new ServiceTracker(context, filter, null);
			locationTracker.open();
		}
		return (Location) locationTracker.getService();
	}
	public void start(BundleContext context) throws Exception {
		activator = this;
		this.context = context;
		executorTracker = context.registerService(ISchedulingExecutor.SERVICE_NAME,
				new JobExecutor(), null);
		EclipseContext.DEBUG = getDebugOptions().getBooleanOption(
				PI_WORKBENCH + Policy.DEBUG_CONTEXTS, false);
		EclipseContext.DEBUG_VERBOSE = EclipseContext.DEBUG
				&& getDebugOptions().getBooleanOption(PI_WORKBENCH + Policy.DEBUG_CONTEXTS_VERBOSE,
						false);
	}
	public void stop(BundleContext context) throws Exception {
		if (pkgAdminTracker != null) {
			pkgAdminTracker.close();
			pkgAdminTracker = null;
		}
		if (locationTracker != null) {
			locationTracker.close();
			locationTracker = null;
		}
		if (executorTracker != null) {
			executorTracker.unregister();
			executorTracker = null;
		}
		if (debugTracker != null) {