RFR: 8293667: Align jlink's --compress option with jmod's --compress option [v2]

[Jaikiran Pai]

On Mon, 12 Dec 2022 20:53:27 GMT, Ian Graves <igraves at openjdk.org> wrote:

>> This is an approach to adding a flag to jlink that will allow --compress to take the same types of arguments as jmod, thus bringing the two into alignment. This likely requires a CSR and a discussion on whether we should deprecate or simply remove the original numeric compression arguments.
>
> Ian Graves has updated the pull request incrementally with one additional commit since the last revision:
> 
>   Swapping deprecations in properties

Unrelated to the changes in this PR, the `--compress` option allows the value `1` to be specified, which implies "Constant string sharing" and enables the `jdk.tools.jlink.internal.plugins.StringSharingPlugin` which as per its documentation, states:
> A Plugin that stores the image classes constant pool UTF_8 entries into the Image StringsTable.

Would there ever be a case where it would be beneficial to have this `StringSharingPlugin` enabled and also set a zip compression?

The `DefaultCompressPlugin`, `ZipPlugin` and the `CompressorPluginTest` would need an update for the copyright years.

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PR: https://git.openjdk.org/jdk/pull/11617