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/MarkerContentGenerator.java
* @param newFilters
	 */
	public void setFilters(Collection newFilters) {
		filters = newFilters;
		enabledFilters = null;
		XMLMemento memento = XMLMemento.createWriteRoot(TAG_FILTERS_SECTION);
		writeFiltersSettings(memento);
		StringWriter writer = new StringWriter();
		try {
			memento.save(writer);
		} catch (IOException e) {
			IDEWorkbenchPlugin.getDefault().getLog().log(Util.errorStatus(e));
		}
		IDEWorkbenchPlugin.getDefault().getPreferenceStore().putValue(
				getMementoPreferenceName(), writer.toString());
		IDEWorkbenchPlugin.getDefault().savePluginPreferences();
	}
	/**
	 * Add group to the enabled filters.
	 * 
	 * @param group
	 */
	public void toggleFilter(MarkerFieldFilterGroup group) {
		Collection enabled = getEnabledFilters();
		if (enabled.remove(group)) {
			group.setEnabled(false);
			return;
		}
		group.setEnabled(true);
		enabled.add(group);