Update autotools config for better platform detection

[tom91136]

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.

[fbergmann]

thank you for the submission.

Note however, that we are in the process of phasing out the autotools build. Several configuration options such as support for SBML packages (supported by the cmake build) are not available with the makefiles. So we recommend using the cmake build.

[fbergmann]

I'll skip the CI step, as we dont have any scripts testing the gnumake build.

[tom91136]

That's good to hear. I now see the section on CMake in the website, thanks!