Update grandfathered/redundant tags and deprecated lang/region subtags

1. Update grandfathered tag list and map
2. Update redundant tag list and map
3. Update deprecated lang list
4. Add deprecated region list and map them to modern region subtags.
5. Map ja-Latn-hepburn-heploc to ja-Latn-alalc97

The IANA language subtag regisry is used to update.

https://www.iana.org/assignments/language-subtag-registry/language-subtag-registry

Upstream bugs:

    https://ssl.icu-project.org/trac/ticket/13726
    https://ssl.icu-project.org/trac/ticket/13723
    https://ssl.icu-project.org/trac/ticket/13721
    https://ssl.icu-project.org/trac/ticket/13720
    https://ssl.icu-project.org/trac/ticket/13719

TBR=gsathya@chromium.org
Bug: v8:7669, v8:5693
Test: v8 test will be added and updated.
Change-Id: I773475ede43bb7a3048f176dde2cee6bfdf9a3e7
Reviewed-on: https://chromium-review.googlesource.com/1026797


Reviewed-by: Jungshik Shin <jshin@chromium.org>