RFR: 8257620: Do not use objc_msgSend_stret to get macOS version

[Anton Kozlov]

On Wed, 2 Dec 2020 20:19:54 GMT, Phil Race <prr at openjdk.org> wrote:

>> Unfortunately, no. AFAIK, the minimum target version is 10.9 https://github.com/openjdk/jdk/blob/master/make/autoconf/flags.m4#L133, so I had to keep indirection.
>
> I wonder if we should be "upping" that to something later.
> 10.9 is over 7 years old and has been out of support for what - 4 years ?

Interesting, I still able to run the build after this change on macOS 10.9.5. I use jdk image and there is no LC_VERSION_MIN_MACOSX in libjvm. libjli, libjava have one, and it's 10.9

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PR: https://git.openjdk.java.net/jdk/pull/1569