Bug 214137 [Markers] Unbound system filters should be bound to problems view.
In 3.3 we supported systemFilters which are not currently picked up by the problems view. We should pick these up for compatiblity.
bundles/org.eclipse.ui.ide/src/org/eclipse/ui/internal/views/markers/CachedMarkerBuilder.java
getAllFilters().add(newGroup);
	}
	/**
	 * Get the name of the filters preference for the receiver,
	 * 
	 * @return String
	 */
	private String getLegacyFiltersPreferenceName() {
		if (viewId.equals(IPageLayout.ID_BOOKMARKS))
			return IDEInternalPreferences.BOOKMARKS_FILTERS;
		if (viewId.equals(IPageLayout.ID_TASK_LIST))
			return IDEInternalPreferences.TASKS_FILTERS;
		return IDEInternalPreferences.PROBLEMS_FILTERS;
	}
	/**
	 * Load the filters defined in memento string.
	 * 
	 * @param mementoString
	 */
	private void loadFiltersFrom(String mementoString) {
		if (mementoString.equals(IPreferenceStore.STRING_DEFAULT_DEFAULT))
			return;
		try {
			loadFilterSettings(XMLMemento.createReadRoot(new StringReader(
					mementoString)));
		} catch (WorkbenchException e) {
			StatusManager.getManager().handle(e.getStatus());
		}
	}
	/**