Bug 117363 PathVariableSelectionDialog has references to java.io.file
M3 PathVariableSelectionDialog needs to remove it's java.io.File references
bundles/org.eclipse.ui.ide/src/org/eclipse/ui/internal/ide/dialogs/IDEResourceInfoUtils.java
private static String FILE_NOT_EXIST_TEXT = IDEWorkbenchMessages.ResourceInfo_fileNotExist;
	
	/**
	 * An empty string to reuse.
	 */
	public static final String EMPTY_STRING = ""; 
	/**
	 * Return the value for the date String for the timestamp of the supplied
	 * resource.
	 * 
	 * @param resource
	 *            The resource to query
	 * @return String
	 */
	public static String getDateStringValue(IResource resource) {
		if (!resource.isLocal(IResource.DEPTH_ZERO))
			return NOT_LOCAL_TEXT;
		URI location = resource.getLocationURI();
		if (location == null) {
			if (resource.isLinked())
				return MISSING_PATH_VARIABLE_TEXT;
			return NOT_EXIST_TEXT;
		}
		IFileInfo info = getFileInfo(location);
		if (info == null)
			return UNKNOWN_LABEL;
		if (info.exists()) {
			DateFormat format = DateFormat.getDateTimeInstance(DateFormat.LONG,
					DateFormat.MEDIUM);
			return format.format(new Date(info.getLastModified()));