Add big endian (mips and mips64) support to BUILD.gn

- icudt[lb]_dat.S (assembly source) is generated at build-time from
  icudt[lb].dat (data bundle) when icu_use_data_file is false.
- icudt[lb].dat is copied depending on the endinaness when icu_use_data_file
  is true.

Part 1:  https://codereview.chromium.org/2162393003
Part 2:  https://codereview.chromium.org/2165403003

It works on Linux (both Chrome and v8) and Mac (v8).
Android was also tested by building base_unittests target with
icu_use_data_file=true/false.

v8 does not yet support mips/mips64 in GN so that this CL cannot be
tested with target_cpu={mips,mips64}.

With Chrome on Mac, TEST below has to be done with
https://codereview.chromium.org/2181043003 for http://crbug.com/630929.

Windows should not be affected at all.

BUG=v8:4828
TEST='gn args <builddir>' with icu_use_data_file set to true or false
TEST=build base_unittests and run with --gtest_filter=ICU*
TEST=build base_unittests and run with --gtest_filter=Message*ormat*
TEST=build 'd8' (v8) and try `(new Date()).toLocaleString("de")`
R=machenbach@chromium.org

Review URL: https://codereview.chromium.org/2174993002 .

BUG=
R=tandrii@chromium.org

Review URL: https://codereview.chromium.org/2182943002 .

Follow-up CL to https://codereview.chromium.org/2162393003

1. make_data_assembly now accepts '--mac' to generate assembly source
for Mac

2.  Fix icu.gyp to support all platforms

BUG=v8:4828
TEST='d8' is built correct with icu_use_data_file set to either 0 or 1 on Mac/Linux
TEST=run `GYP_DEFINES="target_arch=mips" ./gypfiles/gyp_v8` and make sure
that ninja files use 'b' data/assembly file for Big Endian on Mac/Linux

R=machenbach@chromium.org

Review URL: https://codereview.chromium.org/2165403003 .

Add a script that generates an assembly file from a .dat file. This is
needed for generating big endian assembly file after using icupkg to
convert little endian icudtl.dat to big endian icudtb.dat. Also the
icu.gyp file is modified so big endian architectures use appropriate
files.

Patch by miran.karic@  ( https://codereview.chromium.org/1967523002/)
with a couple of fixes:

1. Two errors mentioned against PS#9 in the above CL.
2. Support copying icu data file for Big Endian targets.

Besides, icudtb.dat was added to common. icudtb.dat was created by
running 'icupkg -tb icudt56l.dat icudt56b.dat' and renaming icudt56b.dat
to icudtb.dat.

BUG=v8:4828
TEST='d8' is built correct with icu_use_data_file set to either 0 or 1.
TEST=run `GYP_DEFINES="target_arch=mips" ./gypfiles/gyp_v8` and make sure
that ninja files use 'b' data/assembly file for Big Endian.

Review URL: https://codereview.chromium.org/2162393003 .

Patch from Miran Karic <miran.karic@imgtec.com>.

I will compare utf8/utf32 fuzzer performance and coverage on
ClusterFuzz.

BUG=pdfium:38
R=jshin@chromium.org

Review URL: https://codereview.chromium.org/2119023002 .

What's new in 2016d is found at

  http://mm.icann.org/pipermail/tz-announce/2016-April/000038.html

Rebuilt ICU data/assembly files are checked in (not shown in the
codereview due to their sizes).

While I'm at it, add scripts/LICENSE file that is identical to
LICENSE at the top of the Chromium tree. Because LICENSE in
third_party/icu is for ICU and is not applicable to files in scripts/.

BUG=473288
TBR=mark
TEST=In JavaScript console, run the following.
      apr30_2016_1200 = new Date("04/30/2016 12:00Z")
      may01_2016_1200 = new Date("05/01/2016 12:00Z")
      apr30_2016_1200.toLocaleString("en", {timeZone: "America/Caracas"})
      may01_2016_1200.toLocaleString("en", {timeZone: "America/Caracas"})

  On April 30, 2016, Caracas is 4:30 behind UTC. On May 1, it's 4:00 behind.

Review URL: https://codereview.chromium.org/1985243002 .

Adding fuzzers for:
  - NumberFormat::parse
  - BreakIterator
  - ucasemap

BUG=chromium:474921
R=jshin@chromium.org, vogelheim@chromium.org

Review URL: https://codereview.chromium.org/1994903002 .

BUG=610673
R=alexclarke@chromium.org, dpranke@chromium.org

Review URL: https://codereview.chromium.org/1991833002 .

Cherry pick  http://bugs.icu-project.org/trac/changeset/38183
to add the support for Emoji properties.

This will be followed by a Blink change to use the API.
( https://codereview.chromium.org/1856353002 )

There's no need to rebuild ICU data because Unicode character
properties are hard-coded in the C++ source files that are
patched by the cherry-pick above.

source/data/in/{pnames,uprops}.icu are updated just for the
record, but they're not actually used. The same is true
of files in source/data/unidata.

BUG=583378
TEST=None
TBR=drott

Review URL: https://codereview.chromium.org/1864463002 .

BUG=575007
R=jshin@chromium.org

Review URL: https://codereview.chromium.org/1838103003 .

1. Update the IANA tz data to 2016c

What's new in 2016b and 2016c are found at

  http://mm.icann.org/pipermail/tz-announce/2016-March/000036.html (2016b)
  http://mm.icann.org/pipermail/tz-announce/2016-March/000037.html (2016c)

2. Locale data fixes
  - en-AU date format fix from the upstream
  - ar and fa: Prepend 'percent sign' with RTL mark (U+200F). From Android.
  - tr: Use ₺ (U+20BA; Turkish Lira Sign) instead of 'TL'. This is to revert a locale patch picked up from Google's internal build of ICU. (Android also uses U+20BA).

In addition, icudtl.dat (the prebuilt ICU data file for platforms other than
Android is moved out of source/data/in to common/. This way, the data build
steps for non-Android and Android can be unified and a bit more streamlined.
icu.gyp and BUILD.gn are updated accordingly as well as README.chromium.

BUG=598000
TEST=See bug comment 0 and comment 1
R=mark@chromium.org

Review URL: https://codereview.chromium.org/1823293002 .

region.cpp has an unnecessary static initializer for a type
UnicodeString and triggers a 'si check' failure.

Upstream bug: http://bugs.icu-project.org/trac/ticket/12408

BUG=575007
TEST=`tools/linux/dump-static-initializers.py chrome` (static build) does not have an entry from region.cpp
TEST=`tools/linux/dump-static-initializers.py libicui18n.so` (shared build) has no entry.
TBR=thakis@chromium.org

Review URL: https://codereview.chromium.org/1816843002 .

ICU in Chromium is compiled with exception disabled [1], but
U_NOEXCEPT is set to 'noexcept'  regardless of whether _HAS_EXCEPTION is set to 0 or (in source/common/unicode/platform.h ). [2].

Set U_NOEXCEPT to empty in our build files to avoid this issue.

[1] http://bugs.icu-project.org/trac/ticket/8343
[2] http://bugs.icu-project.org/trac/ticket/12406

BUG=575007
TEST=Build on Windows with MSVS 2015 succeeds.
R=thakis@chromium.org

Review URL: https://codereview.chromium.org/1816673002 .

BUG=297668
R=dpranke@chromium.org

Review URL: https://codereview.chromium.org/1755473004 .

This is, among other things, to make sure that a change is not made
against ToT while ICU is in the middle of update to a new version.
For such a change, a branch has to be used.

BUG=None

Review URL: https://codereview.chromium.org/1713163002 .

Update the copyright years in LICENSE (taken from license.html) and
IANA timezone DB version in README.chromium.

Incorporate the format fixes made by Mostyn Bramley-Moore <mostynb@opera.com>
in https://codereview.chromium.org/1530343003/

BUG=575007
TEST=None
TBR=mostynb@opera.com

Review URL: https://codereview.chromium.org/1678243002 .

1. ast,an,wa locale data (minimal)
   - make up the minimal locale data for 3 languages.
   - update source/data/{locale,lang}/reslocal.mk to have 3 languages
   - update scripts/data_file_to_preserve.txt to have files for 3 locales
     listed.
   - In chromium, these languages have to be added to the A-L list to show
     up in the A-L pull-down in settings.

2. IANA timezone db updte to 2016a
  See http://mm.icann.org/pipermail/tz-announce/2016-January/000035.html
  for the change.

3. Pre-built-data files are updated.

Data (icudtl.dat) size changes between 54.1 and 56.1
  non-Android platforms: 10,124,096 bytes (net change: -83,840)
  Android: 6,560,080 bytes (net change: +291,840 / 4.66%)

BUG=575007,474333
R=jsbell@chromium.org

Review URL: https://codereview.chromium.org/1665113004 .

See http://crbug.com/417850 for UTF-32
See http://bugs.icu-project.org/trac/ticket/12147 for C4275 warning
from MSVC.

BUG=575007
TEST=Layout tests fast/encoding/*
TEST=MSVC does not emit C4275 warning any more
R=jsbell@chromium.org

Review URL: https://codereview.chromium.org/1664293002 .

patches/wordbrk.patch was not applied by mistake while updating ICU
to 56.1.

This affects how we break domain names (separated by full stop). We want
them to be split at full stop at the cost of 'breaking' cases like
"e.g." and "i.e.".

All the ICU data files were rebuilt for the change.

BUG=575007
TEST=gfx_unittests --gtest_filter=RenderText*Word*
TEST=layout tests: css1/text_properties/text_transform.html fast/text/window-find.html editing/text-iterator/findString.html css2.1/t1605-c545-txttrans-00-b-ag.html

Review URL: https://codereview.chromium.org/1659833002 .

Set fLastSetLiteral to U_SENTINEL in the ctor and check if it's still
U_SENTINEL before adding the range.

BUG=582470
TEST=See comments 13 and 15 in the bug
TBR=mmoroz

Review URL: https://codereview.chromium.org/1656003004 .

This is to cherry-pick a fix for
  http://bugs.icu-project.org/trac/ticket/12130

It's done by merging commit '2b12f877' (for m49 branch) to
master. (ICU's m49 branch was fixed first because ICU master was
in the middle of upgrading to ICU 56.1).

BUG=575206
TEST=See comment 51 in the bug
TBR=mmoroz@chromium.org

Review URL: https://codereview.chromium.org/1662453002 .

MSVC complains about '*/* foobar */'. Add a space between '*' and '/'.

ICU uses a deprecated API internally and '-Wno-deprecated...' flag
has to be turned on on Android as well as on Linux.

Do not use ''-Wno-reorder' any more because it's not necessary.

BUG=575007
TEST=Once rolled, Android and Windows build go through.
R=thakis@chromium.org

Review URL: https://codereview.chromium.org/1646623006 .

* Update the pre-built ICU data files for all platforms

  source/data/in/icudtl.dat for non-Android platforms
  {linux,mac}/icudt*.S for linux/mac
  android/icudtl.dat and android/icudt*.S for Android
  windows/icudt.dll for Windows

* Update Android data trimming script

  1. Make sure that 'default' calendar is kept in locales where it's relevant
    : root, th, fa, ar_SA, etc.
  2. Add a minimal region data to work around a bug in ICU with pool.res
     handling

* Update gn and gyp files
* And add a TODO comment to update.sh to automate the build file update.
* Add it_CH to the locale list.
* Add sr_Latn to unit/reslocal.mk (required by sh) and
  line_normal_fi to brkitr/brklocal.mk (referred to in brkitr/fi.txt) in
  place of line_fi.

* Update and add scripts for data building
* Completely rewrite README.chromium
* Check-in the prebuilt ICU data files/assembly sources for
  Linux,Mac,Windows,Chrome OS and Android.

BUG=575007
TEST=Blink layout tests, webkit unittests
TEST=All bots can build successfully
TEST=net_unittests --gtest_filter="*ilenameUtil*"
TEST=net_unittests --gtest_filter="*IDN*" (pending bug 336973)
TEST=base_unittests --gtest_filter="*Conv*"
TEST=browser_tests --gtest_filter="*ncoding*"
TEST=base_unittests --gtest_filter="*essage*"
TEST=ui_base_unittests --gtest_filter="*ormat*"
TEST=ui_base_unittests --gtest_filter="L10n*"
R=mark@chromium.org

Review URL: https://codereview.chromium.org/1639543006 .

Below is the list of changes in reverse order.

1. Drop uconv.patch (upstream took my patch)
2. Apply data.build.win and data_sym patches
3. Apply vscomp.patch and update the patch file.
   update README.chromium about two parts of the patch that
   are not necessary any more.

4. Apply wpo patch and update the patch file

5. Android brkitr adjustment
   * Do not apply the patch but just updates the patch
   * Do not use CJdict on Android to save 2MB in the data size.

6. Clean up brkitr patches
  * Rename brkitr.patch to wordbkr.patch and keep only word.txt diff
  * Make a new linebrk.patch with line breaking adjustment (dropping
    loose rules to save space until the upstream implements space-efficient mechanism for line breaking rule variations)
  * Update README.chromium
  * Apply local patches for Khmer dictionary handling and cjdict

7. Adjust line breaking rules.
  This corresponds to set 2 in
     https://code.google.com/p/chromium/issues/detail?id=575007#c6

BUG=575007
TEST=None
R=mark@chromium.org

Review URL: https://codereview.chromium.org/1637683002 .

1. Apply post-56 patches from the trunk for measure/date format
    http://bugs.icu-project.org/trac/ticket/11986
    http://bugs.icu-project.org/trac/ticket/12031
    http://bugs.icu-project.org/trac/ticket/12030
    http://bugs.icu-project.org/trac/ticket/12041
2. Generate a combined patch (measure_format.patch) for the above.
3. Split locale_google.patch into 'locale_google.patch' and
   'relative_date.patch'. The latter is taken from Android.
4. Update README.chromium

Besides, apply two local patches : {tzdetect,xlit..}.patch and
adjust gb18030.ucm and the corresponding patch

Also, remove obsolte patches and update README.chromium

BUG=575007
R=mark@chromium.org

Review URL: https://codereview.chromium.org/1621943002 .

1. AM/PM, midnight, noon formatting for a few Indian locales
2. Currency signs in ru/uk/tr locales
3. Region name change for Hong Kong and Macau in all locales
4. Timezone name changes in Korean and Chinese locales
5. Internval format changes from AOSP:
   https://android.googlesource.com/platform/external/icu/+/f9ffd5b%5E%21/#F0
6. Minor locale changes for Korean: locale1.patch

BUG=575007
TEST=None
R=mark@chromium.org

Review URL: https://codereview.chromium.org/1625623003 .

Make the tree ready for the application Google's and Chrome's data
and post-56 code patches.

1. Fix trim_data.sh to run from anywhere.
2. Update patch_locale.sh for Android and add en_IN to the locale list
3. Apply data.build.patch
4. Exclude non-UI locale data for unit locale category
5. Add some regional variant locales to locale, unit, zone and coll.
6. Update locale lists for locale, unit, zone, and coll

BUG=575007
TEST=None
R=mark@chromium.org

Review URL: https://codereview.chromium.org/1624643003 .

Run scripts/update.sh to get icu 56.1 from the upstream while
preserving local configuration files and converter files.

BUG=575007
TEST=None

Review URL: https://codereview.chromium.org/1621843002 .

Add scripts/udpate.sh that automates the initial check-out of a new
version of ICU.

BUG=575007
TEST=None
R=mark@chromium.org

Review URL: https://codereview.chromium.org/1566043002 .

* Big5 : https://www.w3.org/Bugs/Public/show_bug.cgi?id=27878

  Special case the following four more code points in
  addition to U+5341, U+5345 that are already special cased.

      U+2550, U+255E, U+2561, U+256A

  For those 6 code points, the last pointer instead of the first pointer
  in index-big5.txt is used for round-trip. The first pointer is for
  decoding-only.

* KOI8-U ( https://www.w3.org/Bugs/Public/show_bug.cgi?id=17053 )

  - 0xAE and 0xBE are mapped to U+04[50]E instead of U+255[DC].
  - Add an alias KOI8-RU

BUG=544228
TEST=1. http://goo.gl/reGQPU :  encoding(form) test
 2. Layout test: fast/encoding/*

R=jsbell@chromium.org

Review URL: https://codereview.chromium.org/1514253003 .

The new GN rule will enable removal of code which copies icudtl.dat in Android
GN code (for instance "copy_content_shell_assets").

BUG=547162
R=dpranke@chromium.org

Review URL: https://codereview.chromium.org/1419583008 .

Previously GN would implicitly make a group's deps public. I'm making this behave like other target types, so ICU's group's deps need to be public to forward the build information to dependents.

TBR=dpranke@chromium.org

Review URL: https://codereview.chromium.org/1374173003 .