RFR: 8329816: Add SLEEF version 3.6.1

[Hamlin Li]

On Thu, 27 Jun 2024 21:59:30 GMT, Mikael Vidstedt <mikael at openjdk.org> wrote:

>> In case you need it and avoid to generate yourself, I've generated sleef inline header of 3.6.1 for riscv, it's at https://github.com/openjdk/jdk/pull/18605/commits/c279a3c290554892939267d9ebe88198988d31a4
>
> @Hamlin-Li I have generated the header files (two aarch64 and the new one for riscv64) using SLEEF 3.6.1. Please make sure they match your expectations!

Hi @vidmik @theRealAph ,
Just a kindly reminder, could you please bring up the topic (about integrating 3rd party source into jdk, mentioned in [1](https://github.com/openjdk/jdk/pull/18605#issuecomment-2214663777), [2](https://github.com/openjdk/jdk/pull/18605#issuecomment-2230581736)) on workshop or summit? Thanks!

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PR Comment: https://git.openjdk.org/jdk/pull/19185#issuecomment-2270516320