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
return IDEInternalPreferences.BOOKMARKS_FILTERS;
		if (viewId.equals(IPageLayout.ID_TASK_LIST))
			return IDEInternalPreferences.TASKS_FILTERS;
		return IDEInternalPreferences.PROBLEMS_FILTERS;
	}
	/**
	 * Get the raw list of marker entries.
	 * 
	 * @return list of MarkerEntry
	 */
	MarkerEntry[] getMarkerEntries() {
		if (refreshingMarkers())
			return EMPTY_ENTRY_ARRAY;
		return currentMap.toArray();
	}
	/**
	 * Get the MarkerItem that matches marker.
	 * 
	 * @param marker
	 * @return MarkerItem or <code>null<code> if it cannot be found
	 */
	MarkerItem getMarkerItem(IMarker marker) {
		if (refreshingMarkers())
			return null;
		return currentMap.getMarkerItem(marker);
	}
	/**
	 * Get the name for the preferences for the receiver.
	 * 
	 * @return String