Move tests for iterator prototype methods

Define tests for intrinsic Iterators under the appropriate subdirectory
of `built-ins`.

test/built-ins/ArrayIteratorPrototype/next/Float32Array.js

@@ -5,6 +5,7 @@ es6id: 22.1.5.2.1
 description: >
     Visits each element of the array in order and ceases iteration once all
     values have been visited.
+features: [TypedArray]
 ---*/
 var array = new Float32Array([3, 1, 2]);
 var iterator = array[Symbol.iterator]();

test/built-ins/ArrayIteratorPrototype/next/Float64Array.js

@@ -5,6 +5,7 @@ es6id: 22.1.5.2.1
 description: >
     Visits each element of the array in order and ceases iteration once all
     values have been visited.
+features: [TypedArray]
 ---*/
 var array = new Float64Array([3, 1, 2]);
 var iterator = array[Symbol.iterator]();

test/built-ins/ArrayIteratorPrototype/next/Int16Array.js

@@ -5,6 +5,7 @@ es6id: 22.1.5.2.1
 description: >
     Visits each element of the array in order and ceases iteration once all
     values have been visited.
+features: [TypedArray]
 ---*/
 var array = new Int16Array([3, 1, 2]);
 var iterator = array[Symbol.iterator]();

test/built-ins/ArrayIteratorPrototype/next/Int32Array.js

@@ -5,6 +5,7 @@ es6id: 22.1.5.2.1
 description: >
     Visits each element of the array in order and ceases iteration once all
     values have been visited.
+features: [TypedArray]
 ---*/
 var array = new Int32Array([3, 1, 2]);
 var iterator = array[Symbol.iterator]();

test/built-ins/ArrayIteratorPrototype/next/Int8Array.js

@@ -5,6 +5,7 @@ es6id: 22.1.5.2.1
 description: >
     Visits each element of the array in order and ceases iteration once all
     values have been visited.
+features: [TypedArray]
 ---*/
 var array = new Int8Array([3, 1, 2]);
 var iterator = array[Symbol.iterator]();

test/built-ins/ArrayIteratorPrototype/next/Uint16Array.js

@@ -5,6 +5,7 @@ es6id: 22.1.5.2.1
 description: >
     Visits each element of the array in order and ceases iteration once all
     values have been visited.
+features: [TypedArray]
 ---*/
 var array = new Uint16Array([3, 1, 2]);
 var iterator = array[Symbol.iterator]();

test/built-ins/ArrayIteratorPrototype/next/Uint32Array.js

@@ -5,6 +5,7 @@ es6id: 22.1.5.2.1
 description: >
     Visits each element of the array in order and ceases iteration once all
     values have been visited.
+features: [TypedArray]
 ---*/
 var array = new Uint32Array([3, 1, 2]);
 var iterator = array[Symbol.iterator]();

test/built-ins/ArrayIteratorPrototype/next/Uint8Array.js

@@ -5,6 +5,7 @@ es6id: 22.1.5.2.1
 description: >
     Visits each element of the array in order and ceases iteration once all
     values have been visited.
+features: [TypedArray]
 ---*/
 var array = new Uint8Array([3, 1, 2]);
 var iterator = array[Symbol.iterator]();

test/built-ins/ArrayIteratorPrototype/next/Uint8ClampedArray.js

@@ -5,6 +5,7 @@ es6id: 22.1.5.2.1
 description: >
     Visits each element of the array in order and ceases iteration once all
     values have been visited.
+features: [TypedArray]
 ---*/
 var array = new Uint8ClampedArray([3, 1, 2]);
 var iterator = array[Symbol.iterator]();