RFR: 8218640: Update ICU4C to version 64.2

[Kevin Rushforth]

On Wed, 9 Oct 2019 13:25:54 GMT, Arun Joseph <github.com+24428922+arun-Joseph at openjdk.org> wrote:

> We currently use ICU4C version 62.1. We should update to the latest stable version 64.2.
> http://site.icu-project.org/home
> 
> ----------------
> 
> Commits:
>  - b56b720e: 8218640: Update ICU4C to version 64.2
> 
> Changes: https://git.openjdk.java.net/jfx/pull/10/files
>  Webrev: https://webrevs.openjdk.java.net/jfx/10/webrev.00
>   Issue: https://bugs.openjdk.java.net/browse/JDK-8218640
>   Stats: 41065 lines in 430 files changed: 23684 ins; 7205 del; 10176 mod
>   Patch: https://git.openjdk.java.net/jfx/pull/10.diff
>   Fetch: git fetch https://git.openjdk.java.net/jfx pull/10/head:pull/10

This will need two reviewers.

Also, @johanvos @tiainen - can one of you do a test build to make sure that there are no problems with this update?

PR: https://git.openjdk.java.net/jfx/pull/10