Description

This change updates the platform detection for autotools, as hinted by the failure itself:

> ./configure
# ....
This script, last modified 2008-12-19, has failed to recognize
the operating system you are using. It is advised that you
download the most up to date version of the config scripts from

  http://git.savannah.gnu.org/gitweb/?p=config.git;a=blob_plain;f=config.guess;hb=HEAD
and
  http://git.savannah.gnu.org/gitweb/?p=config.git;a=blob_plain;f=config.sub;hb=HEAD

Motivation and Context

On an aarch64 Linux machine, running ./configure shows the error in the previous section.
I guess aarch64 isn't really a thing back in 2008.

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)
• Change in documentation

Checklist:

• I have updated all documentation necessary.
• I have checked spelling in (new) comments.

Testing

• Testing is done automatically and codecov shows test coverage
• This cannot be tested automatically

I've tested the change on both x86_64 and aarch64, the build completed correctly with the change.