Bug 212733 [Markers] Problem view no longer updates when changing the visible marker limit
Version: 3.4.0 Build id: I20071211-0010 By default, the view shows 100 markers. When changing this limit (through marker prefs), the view doesn't update. One need to close/reopen for this to get taken into account. This is a regression.
bundles/org.eclipse.ui.ide/src/org/eclipse/ui/internal/provisional/views/markers/ExtendedMarkersView.java
*/
	public boolean getSortAscending() {
		return viewer.getTree().getSortDirection() == SWT.TOP;
	}
	/**
	 * Return a job for updating the receiver.
	 * 
	 * @return Job
	 */
	private Job getUpdateJob(final CachedMarkerBuilder builder) {
		updateJob = new WorkbenchJob(MarkerMessages.MarkerView_queueing_updates) {
			/*
			 * (non-Javadoc)
			 * 
			 * @see org.eclipse.core.runtime.jobs.Job#belongsTo(java.lang.Object)
			 */
			public boolean belongsTo(Object family) {
				return family == MarkerContentGenerator.CACHE_UPDATE_FAMILY;
			}
			/**
			 * Return the viewer that is being updated.
			 * 
			 * @return TreeViewer
			 */
			private TreeViewer getViewer() {
				return viewer;
			}
			/*
			 * (non-Javadoc)
			 *