Misleading architecture string for arm on appimagetool

[azubieta]

appimagetool expects arm_aarch64 as architecture string for aarch64 and arm for armhf. Is there an special reason for this name changes? From my point of view it's extremely misleading considering that the binaries are published using aarch64 and armhf.

https://github.com/AppImage/AppImageKit/blob/master/src/appimagetool.c#L362

[probonopd]

Hi @azubieta I think it is an unintentional bug.