Bug 203838 [Markers] [Markers] clicking on column headers does not sort table
I20070918 Clicking on any of the column headers does not sort based on the relevant column.
bundles/org.eclipse.ui.ide/src/org/eclipse/ui/internal/provisional/views/markers/CachedMarkerBuilder.java
MarkerCategory[] nodes = new MarkerCategory[categories.size()];
		categories.toArray(nodes);
		return nodes;
	}
	/**
	 * Cancel the pending jobs in the receiver.
	 */
	private void cancelJobs() {
		markerProcessJob.cancel();
		updateJob.cancel();
	}
	/**
	 * Create the job for updating the markers.
	 */
	private void createMarkerProcessJob() {
		markerProcessJob = new Job(MarkerMessages.MarkerView_processUpdates) {
			/*
			 * (non-Javadoc)
			 * 
			 * @see org.eclipse.core.runtime.jobs.Job#belongsTo(java.lang.Object)
			 */
			public boolean belongsTo(Object family) {
				return MarkerContentGenerator.CACHE_UPDATE_FAMILY == family;
			}
			/*
			 * (non-Javadoc)
			 * 
			 * @see org.eclipse.core.runtime.jobs.Job#run(org.eclipse.core.runtime.IProgressMonitor)
			 */
			protected IStatus run(IProgressMonitor monitor) {