RFR: 8288979: Improve CLDRConverter run time [v2]

[Naoto Sato]

On Wed, 22 Jun 2022 17:57:44 GMT, Naoto Sato <naoto at openjdk.org> wrote:

>> A stable order is useful when comparing between builds (by a human). 
>> It also supports the goal of reproducible builds.
>> @naotoj  What do you think?
>
> IIUC, once this fix makes it to the repository, the build will be reproducible. Making it to be sorted is a welcome enhancement (I compare the generated bundles manually from time to time), but it may be costly so it could defy the performance improvement?

BTW, this can utilize the new `HashMap.newHashMap()`, although I don't think resizing would be occurring in this case.

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PR: https://git.openjdk.org/jdk/pull/9243