Bug 189490 [CommonNavigator] Go To->Resource won't enable
I0524 1. Open the Project Explorer in the Resource perspective 2. Create a vanilla project P 3. Create a folder F 4. Create a file resource R Open the Navigate->Go To file. "Resource..." will remain disabled.
bundles/org.eclipse.ui.navigator/src/org/eclipse/ui/navigator/CommonNavigator.java
}
	/**
	 * <p>
	 * Note: This method is for internal use only. Clients should not call this
	 * method.
	 * </p>
	 * 
	 * @see org.eclipse.ui.part.ViewPart#init(org.eclipse.ui.IViewSite,
	 *      org.eclipse.ui.IMemento)
	 */
	public void init(IViewSite aSite, IMemento aMemento)
			throws PartInitException {
		super.init(aSite, aMemento);
		memento = aMemento;
		if (memento != null) {
			Integer linkingEnabledInteger = memento.getInteger(LINKING_ENABLED);
			setLinkingEnabled(((linkingEnabledInteger != null) ? linkingEnabledInteger
					.intValue() == 1
					: false));
		}
	}
	/**
	 * 
	 * <p>
	 * Note: This method is for internal use only. Clients should not call this
	 * method.
	 * </p>
	 * 
	 * @see org.eclipse.ui.part.ViewPart#saveState(org.eclipse.ui.IMemento)
	 */