1.4.11 breaks ValueEnums with private constructors

[lloydmeta]

As @zifeo pointed out, this used to compile under > 1.4.11 but fails now.

trait CustomEnumEntry extends IntEnumEntry {
  val value: Int
  val name: String
}
trait CustomEnum[T <: CustomEnumEntry] extends IntEnum[T] {
  def apply(name: String): T =
    values.find(_.name == name).get
}
trait CustomEnumComparable[T <: CustomEnumEntry] {
  this: T =>
  def >=(that: T): Boolean =
    this.value >= that.value
}
sealed abstract class TestEnum private (val value: Int, val name: String)
  extends CustomEnumEntry with CustomEnumComparable[TestEnum]
object TestEnum extends CustomEnum[TestEnum] {
  val values = findValues
  case object A extends TestEnum(10, "a")
  case object B extends TestEnum(20, "b")
}

[lloydmeta]

Fixed by #67