Add AArch64 Linux support

[robsmith11]

Idk how difficult it is, but I see there is already support for 32bit arm. Is it possible to add the 64bit libraries as well?

julia> versioninfo()
Julia Version 1.3.0-DEV.0
Platform Info:
  OS: Linux (aarch64-unknown-linux-gnu)
  CPU: unknown
  WORD_SIZE: 64
  LIBM: libopenlibm
  LLVM: libLLVM-6.0.1 (ORCJIT, kryo)

[yebai]

This should be straightforward once there is an official Julia AArch64 binary.

[robsmith11]

Great! AArch64 was recently readded to the download page for the latest release:

https://julialang.org/downloads/

[yebai]

@robsmith11 This should be fixed by #33. Please give it a try and let us know if you have any further problems.

[robsmith11]

Thanks! It works for me.