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
MarkerFieldFilterGroup filter = (MarkerFieldFilterGroup) filters
					.next();
			int scope = filter.getScope();
			if (scope == MarkerFieldFilterGroup.ON_ANY
					|| scope == MarkerFieldFilterGroup.ON_WORKING_SET)
				continue;
			if (newElements == null || newElements.length < 1)
				continue;
			if (focusResources.length == 0)
				return true; 
			if (Arrays.equals(focusResources, newElements))
				continue;
			if (scope == MarkerFieldFilterGroup.ON_ANY_IN_SAME_CONTAINER) {
				Collection oldProjects = MarkerFieldFilterGroup
						.getProjectsAsCollection(focusResources);
				Collection newProjects = MarkerFieldFilterGroup
						.getProjectsAsCollection(newElements);
				if (oldProjects.size() == newProjects.size()
						&& newProjects.containsAll(oldProjects))
					continue;
				return true;
			}
			return true;
		}
		return false;
	}
	/**
	 * 
	 */
	private void writeFiltersPreference() {