RFR: 8351323: Parameterize compiler and linker flags for iconv [v3]

[duke]

On Thu, 13 Mar 2025 11:39:14 GMT, snake66 <duke at openjdk.org> wrote:

>> Allows for future support for platforms that require different flags for libiconv support.
>> 
>> Sponsored-by: The FreeBSD Foundation
>
> snake66 has updated the pull request incrementally with one additional commit since the last revision:
> 
>   Unbreak libjdwp build

@snake66 
Your change (at version a9fdfef5f18c63deebd64f37825b8b733997c588) is now ready to be sponsored by a Committer.

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PR Comment: https://git.openjdk.org/jdk/pull/23995#issuecomment-2721348961