Revert "Revert "Upgrade to 5.0.71.48"" DO NOT MERGE

This reverts commit f2e3994fa5148cc3d9946666f0b0596290192b0e,
and updates the x64 makefile properly so it doesn't break that
build.

FPIIM-449

Change-Id: Ib83e35bfbae6af627451c926a9650ec57c045605
(cherry picked from commit 109988c7ccb6f3fd1a58574fa3dfb88beaef6632)
diff --git a/test/mjsunit/harmony/iterator-close.js b/test/mjsunit/harmony/iterator-close.js
new file mode 100644
index 0000000..94785de
--- /dev/null
+++ b/test/mjsunit/harmony/iterator-close.js
@@ -0,0 +1,364 @@
+// Copyright 2016 the V8 project authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+// Flags: --harmony-iterator-close
+
+function* g() { yield 42; return 88 };
+
+
+// Return method is "undefined".
+{
+  g.prototype.return = null;
+
+  assertEquals(undefined, (() => {
+    for (let x of g()) { break; }
+  })());
+
+  assertEquals(undefined, (() => {
+    for (x of g()) { break; }
+  })());
+
+  assertThrowsEquals(() => {
+    for (let x of g()) { throw 42; }
+  }, 42);
+
+  assertThrowsEquals(() => {
+    for (x of g()) { throw 42; }
+  }, 42);
+
+  assertEquals(42, (() => {
+    for (let x of g()) { return 42; }
+  })());
+
+  assertEquals(42, (() => {
+    for (x of g()) { return 42; }
+  })());
+
+  assertEquals(42, eval('for (let x of g()) { x; }'));
+
+  assertEquals(42, eval('for (let x of g()) { x; }'));
+}
+
+
+// Return method is not callable.
+{
+  g.prototype.return = 666;
+
+  assertThrows(() => {
+    for (let x of g()) { break; }
+  }, TypeError);
+
+  assertThrows(() => {
+    for (x of g()) { break; }
+  }, TypeError);
+
+  assertThrows(() => {
+    for (let x of g()) { throw 666; }
+  }, TypeError);
+
+  assertThrows(() => {
+    for (x of g()) { throw 666; }
+  }, TypeError);
+
+  assertThrows(() => {
+    for (let x of g()) { return 666; }
+  }, TypeError);
+
+  assertThrows(() => {
+    for (x of g()) { return 666; }
+  }, TypeError);
+
+  assertEquals(42, eval('for (let x of g()) { x; }'));
+
+  assertEquals(42, eval('for (let x of g()) { x; }'));
+}
+
+
+// Return method does not return an object.
+{
+  g.prototype.return = () => 666;
+
+  assertThrows(() => {
+    for (let x of g()) { break; }
+  }, TypeError);
+
+  assertThrows(() => {
+    for (x of g()) { break; }
+  }, TypeError);
+
+  assertThrows(() => {
+    for (let x of g()) { throw 666; }
+  }, TypeError);
+
+  assertThrows(() => {
+    for (x of g()) { throw 666; }
+  }, TypeError);
+
+  assertThrows(() => {
+    for (let x of g()) { return 666; }
+  }, TypeError);
+
+  assertThrows(() => {
+    for (x of g()) { return 666; }
+  }, TypeError);
+
+  assertEquals(42, eval('for (let x of g()) { x; }'));
+
+  assertEquals(42, eval('for (x of g()) { x; }'));
+}
+
+
+// Return method returns an object.
+{
+  let log = [];
+  g.prototype.return = (...args) => { log.push(args); return {} };
+
+  log = [];
+  for (let x of g()) { break; }
+  assertEquals([[]], log);
+
+  log = [];
+  for (x of g()) { break; }
+  assertEquals([[]], log);
+
+  log = [];
+  assertThrowsEquals(() => {
+    for (let x of g()) { throw 42; }
+  }, 42);
+  assertEquals([[]], log);
+
+  log = [];
+  assertThrowsEquals(() => {
+    for (x of g()) { throw 42; }
+  }, 42);
+  assertEquals([[]], log);
+
+  log = [];
+  assertEquals(42, (() => {
+    for (let x of g()) { return 42; }
+  })());
+  assertEquals([[]], log);
+
+  log = [];
+  assertEquals(42, (() => {
+    for (x of g()) { return 42; }
+  })());
+  assertEquals([[]], log);
+
+  log = [];
+  assertEquals(42, eval('for (let x of g()) { x; }'));
+  assertEquals([], log);
+
+  log = [];
+  assertEquals(42, eval('for (x of g()) { x; }'));
+  assertEquals([], log);
+}
+
+
+// Return method throws.
+{
+  let log = [];
+  g.prototype.return = (...args) => { log.push(args); throw 23 };
+
+  log = [];
+  assertThrowsEquals(() => {
+    for (let x of g()) { break; }
+  }, 23);
+  assertEquals([[]], log);
+
+  log = [];
+  assertThrowsEquals(() => {
+    for (x of g()) { break; }
+  }, 23);
+  assertEquals([[]], log);
+
+  log = [];
+  assertThrowsEquals(() => {
+    for (let x of g()) { throw 42; }
+  }, 42);
+  assertEquals([[]], log);
+
+  log = [];
+  assertThrowsEquals(() => {
+    for (x of g()) { throw 42; }
+  }, 42);
+  assertEquals([[]], log);
+
+  log = [];
+  assertThrowsEquals(() => {
+    for (let x of g()) { return 42; }
+  }, 23);
+  assertEquals([[]], log);
+
+  log = [];
+  assertThrowsEquals(() => {
+    for (x of g()) { return 42; }
+  }, 23);
+  assertEquals([[]], log);
+
+  log = [];
+  assertEquals(42, eval('for (let x of g()) { x; }'));
+  assertEquals([], log);
+
+  log = [];
+  assertEquals(42, eval('for (x of g()) { x; }'));
+  assertEquals([], log);
+}
+
+
+// Next method throws.
+{
+  g.prototype.next = () => { throw 666; };
+  g.prototype.return = () => { assertUnreachable() };
+
+  assertThrowsEquals(() => {
+    for (let x of g()) {}
+  }, 666);
+
+  assertThrowsEquals(() => {
+    for (x of g()) {}
+  }, 666);
+}
+
+
+// Nested loops.
+{
+  function* g1() { yield 1; yield 2; throw 3; }
+  function* g2() { yield -1; yield -2; throw -3; }
+
+  assertDoesNotThrow(() => {
+    for (let x of g1()) {
+      for (let y of g2()) {
+        if (y == -2) break;
+      }
+      if (x == 2) break;
+    }
+  }, -3);
+
+  assertThrowsEquals(() => {
+    for (let x of g1()) {
+      for (let y of g2()) {
+      }
+    }
+  }, -3);
+
+  assertThrowsEquals(() => {
+    for (let x of g1()) {
+      for (let y of g2()) {
+        if (y == -2) break;
+      }
+    }
+  }, 3);
+
+  assertDoesNotThrow(() => {
+    l: for (let x of g1()) {
+      for (let y of g2()) {
+        if (y == -2) break l;
+      }
+    }
+  });
+
+  assertThrowsEquals(() => {
+    for (let x of g1()) {
+      for (let y of g2()) {
+        throw 4;
+      }
+    }
+  }, 4);
+
+  assertThrowsEquals(() => {
+    for (let x of g1()) {
+      for (let y of g2()) {
+        if (y == -2) throw 4;
+      }
+    }
+  }, 4);
+
+  let log = [];
+  g1.prototype.return = () => { log.push(1); throw 5 };
+  g2.prototype.return = () => { log.push(2); throw -5 };
+
+  log = [];
+  assertThrowsEquals(() => {
+    for (let x of g1()) {
+      for (let y of g2()) {
+        if (y == -2) break;
+      }
+      if (x == 2) break;
+    }
+  }, -5);
+  assertEquals([2, 1], log);
+
+  log = [];
+  assertThrowsEquals(() => {
+    for (let x of g1()) {
+      for (let y of g2()) {
+      }
+    }
+  }, -3);
+  assertEquals([1], log);
+
+  log = [];
+  assertThrowsEquals(() => {
+    for (let x of g1()) {
+      for (let y of g2()) {
+        if (y == -2) break;
+      }
+    }
+  }, -5);
+  assertEquals([2, 1], log);
+
+  log = [];
+  assertThrowsEquals(() => {
+    l: for (let x of g1()) {
+      for (let y of g2()) {
+        if (y == -2) break l;
+      }
+    }
+  }, -5);
+  assertEquals([2, 1], log);
+
+  log = [];
+  assertThrowsEquals(() => {
+    for (let x of g1()) {
+      for (let y of g2()) {
+        throw 4;
+      }
+    }
+  }, 4);
+  assertEquals([2, 1], log);
+
+  log = [];
+  assertThrowsEquals(() => {
+    for (let x of g1()) {
+      for (let y of g2()) {
+        if (y == -2) throw 4;
+      }
+    }
+  }, 4);
+  assertEquals([2, 1], log);
+
+  log = [];
+  assertThrowsEquals(() => {
+    for (let x of g1()) {
+      try {
+        for (let y of g2()) {
+        }
+      } catch (_) {}
+    }
+  }, 3);
+  assertEquals([], log);
+
+  log = [];
+  assertThrowsEquals(() => {
+    for (let x of g1()) {
+      try {
+        for (let y of g2()) {
+        }
+      } catch (_) {}
+      if (x == 2) break;
+    }
+  }, 5);
+  assertEquals([1], log);
+}