RFR: 8360774: Use text representation of normalization data files

[Naoto Sato]

On Fri, 27 Jun 2025 20:45:14 GMT, Naoto Sato <naoto at openjdk.org> wrote:

> The ICU4J component currently stores binary data files directly in the repository. This change replaces them with base64-encoded text files and converts them to binary during the build process

> Just converting a binary file to base64 does not accomplish anything of value. It is true that we try to avoid binary files, but if what we need actually _is_ a binary file, then we better store it as such, rather than to taking a detour over base64.

It is merely to avoid checking binary files in the repository. If we are OK continuing to do so, I am fine with it

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PR Comment: https://git.openjdk.org/jdk/pull/26027#issuecomment-3014393670