Support build for arm64

[ikorennoy]

Support a native library build for arm64. It must supply binaries for amd64 and arm64 and load the required library at startup.

At the moment the problem is that when trying to use gradle with qemu an error Unsupported setsockopt level=0 optname=49 occurs

[threeseed]

@ikorennoy .. Maybe worth re-testing this with a newer version of Linux:

oracle/graal#4143