[tlbuild] aarch64/armv8h binary distribution?

[Karl Berry]

To add a new platform to TL, what specifically is needed is 
- config.guess output on the system,

- suggested description string (see platform_desc
  in tlpkg/TeXLive/TLUtils.pm for existing ones),

- xz+xzdec stripped binaries,

- tarball of the (stripped) binaries, preferably with no subdir
  in the archive, and including all scripts and optional (notably asy)
  programs ==> the bindir resulting from the build, essentially.

https://www.tug.org/texlive/build.html#deploy

Thanks,
Karl