lib/time: update to IANA release 2016f (July 2016)

Fixes #16273

Change-Id: I443e1f254fd683c4ff61beadae89c1c45ff5d972
Reviewed-on: https://go-review.googlesource.com/24744Reviewed-by: Andrew Gerrand <adg@golang.org>
Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Quentin Smith <quentin@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>

lib/time/update.bash

-#!/bin/sh
+#!/bin/bash
 # Copyright 2012 The Go Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style
 # license that can be found in the LICENSE file.
@@ -8,8 +8,8 @@
 # Consult http://www.iana.org/time-zones for the latest versions.
 
 # Versions to use.
-CODE=2016d
-DATA=2016d
+CODE=2016f
+DATA=2016f
 
 set -e
 rm -rf work