use kotlin Iterable/Iterator

instead of java Iterable/Iterator
in Kotlin code in library

libraries/stdlib/test/CollectionApiCheck.kt

@@ -23,7 +23,7 @@ trait Traversable<T> {
   fun forEach(operation: (element: T)-> Unit)
 
   /** Returns a new collection containing the results of applying the given function to each element in this collection */
-  fun <T, R> java.lang.Iterable<T>.map(transform : (T)-> R) : Collection<R>
+  fun <T, R> Iterable<T>.map(transform : (T)-> R) : Collection<R>
 }
 
 /**

libraries/stdlib/test/CollectionJVMTest.kt

@@ -116,7 +116,7 @@ class CollectionJVMTest {
     test fun sortFunctionShouldReturnSortedCopyForIterable() {
         // TODO fixme Some sort of in/out variance thing - or an issue with Java interop?
         todo {
-//        val list : java.lang.Iterable<Int> = arrayList(2, 3, 1)
+//        val list : Iterable<Int> = arrayList(2, 3, 1)
 //        expect(arrayList(1, 2, 3)) { list.sort() }
 //        expect(arrayList(2, 3, 1)) { list }
         }

libraries/stdlib/test/CollectionTest.kt

@@ -3,6 +3,7 @@ package test.collections
 import kotlin.test.*
 
 import java.util.*
+import jet.Iterator
 
 import org.junit.Test as test
 
@@ -272,7 +273,7 @@ class CollectionTest {
     }
 
     test fun reverseFunctionShouldReturnReversedCopyForIterable() {
-        val iterable : java.lang.Iterable<Int> = arrayList(2, 3, 1)
+        val iterable : Iterable<Int> = arrayList(2, 3, 1)
         expect(arrayList(1, 3, 2)) { iterable.reverse() }
         expect(arrayList(2, 3, 1)) { iterable }
     }
@@ -387,10 +388,10 @@ class CollectionTest {
         //    assertFalse(IterableWrapper(linkedList<Int>()).contains(15))
     }
 
-    class IterableWrapper<T>(collection : java.lang.Iterable<T>) : java.lang.Iterable<T> {
+    class IterableWrapper<T>(collection : Iterable<T>) : Iterable<T> {
         private val collection = collection
 
-        override fun iterator(): java.util.Iterator<T> {
+        override fun iterator(): Iterator<T> {
             return collection.iterator().sure()
         }
     }

libraries/stdlib/test/iterators/IteratorsTest.kt

@@ -4,7 +4,7 @@ import kotlin.test.assertEquals
 import org.junit.Test as test
 import kotlin.test.failsWith
 
-fun fibonacci(): java.util.Iterator<Int> {
+fun fibonacci(): Iterator<Int> {
     // fibonacci terms
     var index = 0; var a = 0; var b = 1
     return iterate<Int> { when (index++) { 0 -> a; 1 -> b; else -> { val result = a + b; a = b; b = result; result } } }

libraries/stdlib/test/regressions/Kt2495Test.kt

@@ -3,7 +3,7 @@ package regressions
 import kotlin.test.assertEquals
 import org.junit.Test as test
 
-fun f(xs: java.util.Iterator<Int>): Int {
+fun f(xs: Iterator<Int>): Int {
     var answer = 0
     for (x in xs)  {
         answer += x