message: Update DirectoryFile C# struct to include added fields
diff: @@ -80,6 +80,8 @@ public struct DirectoryFile : IComparable<DirectoryFile>
  [CustomMarshalAs(CustomUnmanagedType.UTF8TemplatedString)]
  public string filename;
  public DirectoryFileProperty flags;
  + public UInt32 lastmod;
  + public UInt64 size;
  public override string ToString()
  {
  