archlinuxARM aarch64 build

[akuropka]

On Arch you can usually use PKGBUILDs for other architectures to generate native packages. It works here without modification.

genie-systemd-2.3.r0.gbf09d8a-1-aarch64.pkg.tar.xz.zip

[cerebrate]

I'm not familiar with the Arch packaging process and 2.4's almost ready to ship. Could I ask you to give me details on how to make this work so I can add it to the Makefile, or send me a PR?

Thanks!