class Gem::Package::TarWriter

def add_symlink(name, target, mode)
  check_closed
  name, prefix = split_name name
  header = Gem::Package::TarHeader.new(:name => name, :mode => mode,
                                       :size => 0, :typeflag => "2",
                                       :linkname => target,
                                       :prefix => prefix,
                                       :mtime => Time.now).to_s
  @io.write header
  self
end