dyn.scala

  def addLibraryPath(pathToAdd: String) {
    import java.lang.reflect.Field
    val usrPathsField: Field =  classOf[ClassLoader].getDeclaredField("usr_paths")
    usrPathsField.setAccessible(true)

    val paths = usrPathsField.get(null).asInstanceOf[Array[String]]

    if (!paths.contains(pathToAdd)) {
      usrPathsField.set(null, paths :+ pathToAdd)
    }
  }