Bug 297303 Resource filters cannot be edited for linked packages
I20091207-1800 Resource filters cannot be edited for linked packages (properties page shows only up for folder, not for packages).
bundles/org.eclipse.ui.ide/src/org/eclipse/ui/internal/ide/dialogs/ResourceFilterPage.java
ResourceFilterGroup groupWidget;
	/**
	 * 
	 */
	public ResourceFilterPage() {
		groupWidget = new ResourceFilterGroup();
	}
	protected Control createContents(Composite parent) {
		PlatformUI.getWorkbench().getHelpSystem().setHelp(getControl(),
				IIDEHelpContextIds.RESOURCE_FILTER_PROPERTY_PAGE);
		IContainer resource = (IContainer) getElement().getAdapter(