[M64 branch] Add a few more confusable map entries

1. Map Malaylam U+0D1F to 's'.
2. Map 'small-cap-like' Cyrillic letters to "look-alike" Latin lowercase
letters.

The characters in new confusable map entries are replaced by their Latin
"look-alike" characters before the skeleton is calculated to compare with
top domain names.

TBR=jshin@chromium.org

(cherry picked from commit b3f0207c14fccc11aaa9d4975ebe46554ad289cb)

Bug: 784761,773930
Test: components_unittests --gtest_filter=*IDNToUni*
Change-Id: Ib26664e21ac5eb290e4a2993b01cbf0edaade0ee
Reviewed-on: https://chromium-review.googlesource.com/805214
Reviewed-by: Peter Kasting <pkasting@chromium.org>
Commit-Queue: Jungshik Shin <jshin@chromium.org>
Cr-Original-Commit-Position: refs/heads/master@{#521648}
Reviewed-on: https://chromium-review.googlesource.com/852973
Reviewed-by: Jungshik Shin <jshin@chromium.org>
Cr-Commit-Position: refs/branch-heads/3282@{#421}
Cr-Branched-From: 5fdc0fab22ce7efd32532ee989b223fa12f8171e-refs/heads/master@{#520840}
6 files changed