ICU update to 54.1 step 7

ICU update to 54.1 step 7

1. Fix a Windows build failure due to:
   a. 'signed vs unsigned' comparison
   b. 'possible data loss' in conversion : Apply pkasting's patch at
      http://bugs.icu-project.org/trac/ticket/11104

2. Drop a few currencies to cut down the data size by 50kB for non-Android
   platforms.

2. Build the ICU data for Android and check in.
  - Drop all display names for languages/scripts/regions except for zh-Han{s,t}
    as before. ( ~ 1.2MB reduction)
  - Drop cjdict by applying android/brkitr.patch. (~ 2MB reduction)
  - Include the display names for only 60+ currencies ( ~ 400kB reduction
    from the non-Android data.
  - Minimize the locale data for 9 locales Chrome on Android is not localized
    to. Drop currency names for those 9 locales. ( ~ 150kB reduction)

Size change:
  1. Non-android: 10,255,584 to 10,200,880
  2. Android:
     - Final : 6,270,880
       With 60+ currency names added (for bug 370849) and
       9 unnecessary locale data dropped.
       It's 232,240 bytes larger than ICU 52.1 (6,038,640).
     - Without any currency names but with 9 unnecessary locale data: 6,026,816
     - With 60+ currency names and 9 unnecessary locale data: 6,426,368

BUG=370849, 428145
TEST=Build on Windows. Blink layout tests, webkit unittests.
R=mark@chromium.org, wangxianzhu@chromium.org

Committed: https://chromium.googlesource.com/chromium/deps/icu/+/26c111a7abf1bf708c881928bb6b31f0746f6e14

[jungshik at Google, 2015-01-28 21:55:20]

jshin@chromium.org changed reviewers:
+ mark@chromium.org, wangxianzhu@chromium.org

[jungshik at Google, 2015-01-28 21:55:22]

Can you take a look? 
The ICU data for Android would have been smaller than ICU 52.1, but I had to add
currency display names for v8 Intl.* API resulting in about 200kB increase.

[Xianzhu, 2015-01-28 22:15:51]

wangxianzhu@chromium.org changed reviewers:
+ andrewhayden@chromium.org

[Xianzhu, 2015-01-28 22:15:53]

lgtm.

+andrewhayden@ who is actively working on ICU for chrome android.

[Mark Mentovai, 2015-01-28 22:39:23]

LGTM (stamp + spot-check)

[jungshik at Google, 2015-01-31 00:49:21]

Committed patchset #6 (id:50001) manually as
26c111a7abf1bf708c881928bb6b31f0746f6e14 (presubmit successful).