RFR: 8301991: Convert l10n properties resource bundles to UTF-8 native [v4]

[Weijun Wang]

On Fri, 17 Mar 2023 20:28:13 GMT, Justin Lu <jlu at openjdk.org> wrote:

>> This PR converts Unicode sequences to UTF-8 native in .properties file. (Excluding the Unicode space and tab sequence). The conversion was done using native2ascii.
>> 
>> In addition, the build logic is adjusted to support reading in the .properties files as UTF-8 during the conversion from .properties file to .java ListResourceBundle file.
>
> Justin Lu has updated the pull request incrementally with one additional commit since the last revision:
> 
>   Adjust CF test to read in with UTF-8 to fix failing test

make/jdk/src/classes/build/tools/compileproperties/CompileProperties.java line 326:

> 324:                         outBuffer.append(toHex((aChar >> 8) & 0xF));
> 325:                         outBuffer.append(toHex((aChar >> 4) & 0xF));
> 326:                         outBuffer.append(toHex(aChar & 0xF));

Sorry I don't know when this tool is called, but why is it still writing in `\unnnn` style?

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PR: https://git.openjdk.org/jdk/pull/12726