Give a proper toString() to OriginalName for debugging.
Give a proper toString() to OriginalName for debugging.

Otherwise, they are undecipherable when printed for debugging
purposes, and even throw a `NullPointerException` for
`NoOriginalName`.

sjrd/scala-js,sjrd/scala-js,gzm0/scala-js,scala-js/scala-js,sjrd/scala-js,scala-js/scala-js,scala-js/scala-js,gzm0/scala-js