Update timezone and apply miscellaneous locale data fixes

README.chromium

 Name: icu
 URL: http://site.icu-project.org/
 Version: 56.1
 License: MIT
 Security Critical: yes
 
-***NOTE***
-ICU is being updated to 56.1 pending one last adjustment on the Chromium-side.
-If you have an urgent fix to apply to ICU 54.1 used for branches,
-file a bug and contact jshin@chromium.org.
-
 Description:
 This directory contains the source code of ICU 56.1 for C/C++.
 
 A. How to update ICU
 
 1. Run "scripts/update.sh <version>" (e.g. 56-1).
    This will download ICU from the upstream svn repository.
    It does preserve Chrome-specific build files (*local.mk) and
    converter files. (see section C)
 
@@ skipping 26 matching lines @@
 
   d. Run
        ${CHROME_ICU_TREE_TOP}/scripts/trim_data.sh
 
     The full locale data for Chrome's UI languages and their select variants
     and the bare minimum locale data for other locales will be kept.
 
   e. Run
        ${CHROME_ICU_TREE_TOP}/scripts/make_data.sh
 
-     This will make icudt${version}l.dat and icudt${version}l_dat.S
+     This makes icudt${version}l.dat and icudt${version}l_dat.S
+
 
   f. Run
-       ${CHROME_ICU_TREE_TOP}/scripts/clean_up_data_source.sh
+       ${CHROME_ICU_TREE_TOP}/scripts/copy_data.sh
 
-     This will erase the result of step d (trim_data.sh).
+     This copies the ICU data file for non-Android platform
+     and the corresponding assembly source files for Linux and Mac to
+     the following places.
+
+     common/icudtl.dat
+     {linux,mac}/icudtl_dat.S
 
   g. Run
-       ${CHROME_ICU_TREE_TOP}/scripts/copy_data.sh
-
-     This will revert the changes made in source/data by trim_data.sh.
-     It will also copy the ICU data file for non-Android platform
-     and the corresponding assembly source files for Linux and Mac to
-     the following places. Check them in.
-
-     source/data/in/icudtl.dat
-     source/{linux,mac}/icudtl_dat.S
-
-  h. Whenever data is updated (e.g timezone update), follow d ~ g as long
-  as the ICU build directory used in a ~ c is kept.
-
-2. icu data files for Android
-
-  a. Follow a ~ d for non-Android platforms
-  b. Run
-
        ${CHROME_ICU_TREE_TOP}/android/patch_locale.sh
 
-    On top of trim_data.sh, further cut the data entries for Android.
+    On top of trim_data.sh (step d), further cuts the data entries for Android.
 
-  c. Run
+  h. Run
        ${CHROME_ICU_TREE_TOP}/scripts/make_data.sh
 
-  d. Run
+     This makes icudt${version}l.dat and icudt${version}l_dat.S for Android.
+
+  i. Run
        ${CHROME_ICU_TREE_TOP}/scripts/copy_data_android.sh
 
-     and check in the following files.
+     This copies icu data files for Android to the following locations:
 
      android/icudtl.dat
      android/icudtl_dat.S
 
-  e. Run
+  j. Run
        ${CHROME_ICU_TREE_TOP}/scripts/clean_up_data_source.sh
 
-     This will erase the result of trim_data.sh and patch_locale.sh
+     This reverts the result of trim_data.sh and patch_locale.sh and
+     make the tree ready for committing updated ICU data files for
+     non-Android and Android platforms.
 
-3. icu data dll for Windows (non-default build option)
+  k. Whenever data is updated (e.g timezone update), follow d ~ j as long
+  as the ICU build directory used in a ~ c is kept. Besides, icudt.dll for
+  Windows has to be udpated following the procedure described below.
+
+
+2. icu data dll for Windows (non-default build option)
 
   Follow these steps to build windows/icudt.dll. By default, we set
   icu_use_icu_data_flag to 1 and don't use this file.
 
   a. check out a clean copy of icu56  from the upstream on Windows
      outside the Chrome tree.
 
     $ svn export --native-eol LF http://source.icu-project.org/repos/icu/icu/tags/release-56-1 ${SEPARATE_ICU_ROOT}/icu56
 
-  b. copy ${CHROME_ICU_ROOT}/source/data/in/icudtl.dat to
+  b. copy ${CHROME_ICU_ROOT}/common/icudtl.dat to
      ${SEPARATE_ICU_ROOT}/source/data/in/icudt56l.dat
   c. copy ${CHROME_ICU_ROOT}/source/data/makedata.mak to
      ${SEPARATE_ICU_ROOT}/source/data/makedata.mak
   c. In Visual Studio, open source/allinone/allinone.sln solution
      in ${SEPARATE_ICU_ROOT}
   d. Build 'makedata' target
   e. icudt56.dll will be generated in ${SEPARATE_ICU_ROOT}/bin
   f. Copy that icudt56.dll to ${CHROME_ICU_ROOT}/windows/icudt.dll
      and check that in.
 
-4. Note on the locale data customization
+3. Note on the locale data customization
 
   - scripts/trim_data.sh
       a. Trim the locale data for Chrome's UI langauges :
          locales, lang, region, currency, zone
       b. Trim the locale data for non-UI languages to the bare minimum :
         ExemplarCharacters, LocaleScript, layout, and the name of the
         language for a locale in its native language.
       c. Remove the legacy Chinese character set-based collation
          (big5han/gb2312han) that don't make any sense and nobdoy uses.
 
@@ skipping 58 matching lines @@
    for ckb to 'Kurdish (Arabic)'.
 
 D. Local Modifications
 
 1. Applied locale data patches from Google obtained by diff'ing
    the upstream copy and Google's internal copy for source/data
 
   - patches/locale_google.patch:
     * Google's internal ICU locale changes
     * Simpler region names for Hong Kong and Macau in all locales
-    * Currency signs in ru, uk and tr locales
+    * Currency signs in ru and uk locales (do not include 'tr' locale changes)
     * AM/PM, midnight, noon formatting for a few Indian locales
     * Timezone name changes in Korean and Chinese locales
 
   - patches/locale1.patch: Minor fixes for Korean
 
 
 2. Applied post-56 fixes from the upstream for measure/date format bugs
 
   - patches/measure_format.patch: combined patch of 12 CLs taken
     from bugs below.
@@ skipping 31 matching lines @@
 
 4. Timezone data update
   Run scripts/update_tz.sh to grab the latest version of the
   following timezone data files and put them in source/data/misc
 
      metaZones.txt
      timezoneTypes.txt
      windowsZones.txt
      zoneinfo64.txt
 
-  As of Feb 8, 2016, the latest version is 2016a and the above files
+  As of March 24, 2016, the latest version is 2016c and the above files
   are available at
-  http://source.icu-project.org/repos/icu/data/trunk/tzdata/icunew/2016a/44/
+  http://source.icu-project.org/repos/icu/data/trunk/tzdata/icunew/2016c/44/
 
 5. Build-related changes
 
   - patches/wpo.patch
     upstream bugs : http://bugs.icu-project.org/trac/ticket/8043
                     http://bugs.icu-project.org/trac/ticket/5701
   - patches/vscomp.patch for building with Visual Studio on Windows.
      a. do not use WINDOWS_LOCALE_API in locmap.c
      b. do not redefine stringpiece::npos
      c. fix http://bugs.icu-project.org/trac/ticket/12129 (C4138 warning)
      d. fix http://bugs.icu-project.org/trac/ticket/11893 (C4275 warning)
 
   - patches/data.build.patch :
       Remove unnecessary resources : unames, collator rule source
   - patches/data.build.win.patch :
       Windows-only data build patch.
   - patches/data_symb.patch :
       Put ICU_DATA_ENTRY_POINT(icudtXX_dat) in common when we use
       the icu data file or icudt.dll
 
 6. Apply a timezone detection API fix
   - patches/tzdetect.patch
   - upstream bugs
     http://bugs.icu-project.org/trac/ticket/11623
 
 7. Fix 'bad cast' found in Transliterator with a cfi build
   - patches/xlit_badcast.patch
-  - upstream bug (fixed in the upstream. Will be in 57 release)
+  - upstream bug (fixed in the upstream. Will be in ICU 57 release)
     http://bugs.icu-project.org/trac/ticket/11937
 
 8. Add back UTF-32 converters temporarily even when
    UCONFIG_ONLY_HTML_CONVERSION is defined until UTF-32 is
    removed from Blink. See
    http://www.icu-project.org/trac/ticket/11296 and
    http://crbug.com/417850
 
    - patches/utf32.patch
 
 9. Fix a UText bug found in uregex_open fuzzer.
   - patches/utext.patch
-  - upstream bug (fixed in trunk in Jan, 2016. Will be in 57 release)
+  - upstream bug (fixed in trunk in Jan, 2016. Will be in ICU 57 release)
     http://bugs.icu-project.org/trac/ticket/12130
 
 10. Fix a bug in regex compiler.
   - patches/regexcmp.patch
-  - upstream bug (fixed in the upstream. Will be in 57 release)
+  - upstream bug (fixed in the upstream. Will be in ICU 57 release)
     http://bugs.icu-project.org/trac/ticket/12138
 
 11. Remove an unnecessary static initializer
   - patches/remove_si.patch
-  - upstream bug
+  - upstream bug (fixed in trunk. Will be in ICU 57 release)
     http://bugs.icu-project.org/trac/ticket/12408
+
+12. Cherry pick locale data fixes from the upstream and Android
+  - patches/locale_extra.patch
+  - upstream bugs
+        http://unicode.org/cldr/trac/ticket/9045 (en-AU date format)
+        http://unicode.org/cldr/trac/ticket/7969 (percent sign in ar and fa)
+  - Android patch for the 2nd bug
+        https://android.googlesource.com/platform/external/icu/+/56b2b8b