Update tz db to 2015b

scripts/update_tz.sh

+#!/bin/bash
+# Copyright (c) 2015 The Chromium Authors. All rights reserved.
+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+
+# Download the 4 files below from the ICU respos and put them in

[Mark Mentovai, 2015/04/02 19:47:10]

respos?

[jungshik at Google, 2015/04/02 21:21:05]

Changed it to 'the ICU data repository' and added a reference to $baseurl below.

+# source/data/misc to update the IANA timezone database in ICU.
+#
+#   metaZones.txt timezoneTypes.txt windowsZones.txt zoneinfo64.txt
+#
+# For IANA Time zone database, set https://www.iana.org/time-zones

[Mark Mentovai, 2015/04/02 19:47:10]

see instead of set?

[jungshik at Google, 2015/04/02 21:21:05]

Done.

+
+if [ $# -lt 1 ];
+then
+  echo "Usage: $0 version (e.g. '2015b')"
+  exit 1
+fi
+
+version=$1
+baseurl="http://source.icu-project.org/repos/icu/data/trunk/tzdata/icunew/"
+outputdir="$(dirname $0)/../source/data/misc"

[Mark Mentovai, 2015/04/02 19:47:10]

"$0"

[jungshik at Google, 2015/04/02 21:21:05]

Done.

+
+
+for f in metaZones.txt timezoneTypes.txt windowsZones.txt zoneinfo64.txt
+do
+  wget -O "${outputdir}/${f}" "${baseurl}/${version}/44/${f}"

[Mark Mentovai, 2015/04/02 19:47:10]

44 seems magic. Is it a version number? Will it ever change? Will we ever want a
different number?

[jungshik at Google, 2015/04/02 21:21:05]

Make it a variable and added an explanation. 

+done