Fix AArch64 Mach-O relocation

[Noisyfox]

This PR adds basic support for encoding AArch64 relocations currently used by GraalVM in Mach-O file.

Mach-O requires to use ARM64_RELOC_ADDEND for encoding addend for certain relocation types:
https://opensource.apple.com/source/ld64/ld64-274.2/src/ld/parsers/macho_relocatable_file.cpp.auto.html

[Noisyfox]

This patch is already used in the development of our iOS framework and it's working fine so far.

[graalvmbot]

Hello Noisyfox, thanks for contributing a PR to our project!

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[teshull]

Hi @Noisyfox. Thanks for the PR. I made a follow up PR which adds the same relocation logic, but also cleans up the relocation information some.

Can you confirm that #3864 works for your use case?

[Noisyfox]

@teshull Yeah that looks good to me~ Thanks~

[graalvmbot]

Hello Noisyfox, thanks for contributing a PR to our project!

We use the Oracle Contributor Agreement to make the copyright of contributions clear. We don't have a record of you having signed this yet, based on your email address timemanager -(dot)- rick -(at)- gmail -(dot)- com. You can sign it at that link.

If you think you've already signed it, please comment below and we'll check.