Make dependency classes public - used by spark

core/src/main/scala/spark/Dependency.scala

@@ -1,23 +1,23 @@
 package spark
 
-private[spark] abstract class Dependency[T](val rdd: RDD[T], val isShuffle: Boolean) extends Serializable
+abstract class Dependency[T](val rdd: RDD[T], val isShuffle: Boolean) extends Serializable
 
-private[spark] abstract class NarrowDependency[T](rdd: RDD[T]) extends Dependency(rdd, false) {
+abstract class NarrowDependency[T](rdd: RDD[T]) extends Dependency(rdd, false) {
   def getParents(outputPartition: Int): Seq[Int]
 }
 
-private[spark] class ShuffleDependency[K, V, C](
+class ShuffleDependency[K, V, C](
     val shuffleId: Int,
     @transient rdd: RDD[(K, V)],
     val aggregator: Aggregator[K, V, C],
     val partitioner: Partitioner)
   extends Dependency(rdd, true)
 
-private[spark] class OneToOneDependency[T](rdd: RDD[T]) extends NarrowDependency[T](rdd) {
+class OneToOneDependency[T](rdd: RDD[T]) extends NarrowDependency[T](rdd) {
   override def getParents(partitionId: Int) = List(partitionId)
 }
 
-private[spark] class RangeDependency[T](rdd: RDD[T], inStart: Int, outStart: Int, length: Int)
+class RangeDependency[T](rdd: RDD[T], inStart: Int, outStart: Int, length: Int)
   extends NarrowDependency[T](rdd) {
   
   override def getParents(partitionId: Int) = {