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
}
	/**
	 * Update the focus resources from list. If there is an update required
	 * return <code>true</code>. This method assumes that there are filters
	 * on resources enabled.
	 * 
	 * @param elements
	 */
	void updateFocusElements(Object[] elements) {
		Collection resourceCollection = new ArrayList();
		for (int i = 0; i < elements.length; i++) {
			if (elements[i] instanceof IResource) {
				resourceCollection.add(elements[i]);
			} else {
				addResources(resourceCollection,
						((ResourceMapping) elements[i]));
			}
		}
		focusResources = new IResource[resourceCollection.size()];
		resourceCollection.toArray(focusResources);
	}
	/**
	 * Return whether or not the list contains a resource that will require
	 * regeneration.
	 * 
	 * @return boolean <code>true</code> if regeneration is required.
	 */
	boolean updateNeeded(Object[] newElements) {
		Iterator filters = getEnabledFilters().iterator();
		while (filters.hasNext()) {