ICU 56 step 6: Check in the pre-built ICU data

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 data repository ($baseurl below) and
 # put them in source/data/misc to update the IANA timezone database in ICU.
 #
 #   metaZones.txt timezoneTypes.txt windowsZones.txt zoneinfo64.txt
 #
 # For IANA Time zone database, see https://www.iana.org/time-zones
 
 if [ $# -lt 1 ];
 then
-  echo "Usage: $0 version (e.g. '2015b')"
+  echo "Usage: "$0" version (e.g. '2015b')" >&2
   exit 1
 fi
 
 version=$1
 baseurl="http://source.icu-project.org/repos/icu/data/trunk/tzdata/icunew/"
 outputdir="$(dirname "$0")/../source/data/misc"
 
 # The latest ICU version for which the timezone data format changed in
 # an incompatible manner.
 # For a given IANA tz db version (e.g. 2015b),
 #  http://source.icu-project.org/repos/icu/data/trunk/tzdata/icunew/${version}
 # has subdirectories for different ICU data versions. As of April 2015, 44
 # is the latest even though the latest ICU release is 55.
 icudataversion=44
 
 sourcedirurl="${baseurl}/${version}/${icudataversion}"
 
 for f in metaZones.txt timezoneTypes.txt windowsZones.txt zoneinfo64.txt
 do
   wget -O "${outputdir}/${f}" "${sourcedirurl}/${f}"
 done