Bug 215985 [Markers] Description column not sorting text
Currently the description column in the problems view is sorting by severity but not comparing Strings of equal severity.
bundles/org.eclipse.ui.ide/src/org/eclipse/ui/internal/views/markers/CachedMarkerBuilder.java
* @param child
	 */
	private void loadUserFilter(IMemento child) {
		MarkerFieldFilterGroup newGroup = new MarkerFieldFilterGroup(null, this);
		newGroup.loadSettings(child);
		getAllFilters().add(newGroup);
	}
	/**
	 * Post build has happened. Let it all run.
	 */
	protected void postBuild() {
		preBuildTime = -1;
	}
	/**
	 * We are in a pre build state. Do not update until the post build happens.
	 */
	protected void preBuild() {
		preBuildTime = System.currentTimeMillis();
	}
	/**
	 * Refresh the sort order and categories of the receiver.
	 * 
	 * @param service
	 *            The service to run the operation in.
	 */
	void refreshContents(IWorkbenchSiteProgressService service) {
		try {
			service.busyCursorWhile(new IRunnableWithProgress() {
				/*
				 * (non-Javadoc)