update config.sub and config.guess for M1 Mac
config.sub and config.guess on LibreSSL are very old.
To build LibreSSL on M1 Mac, we need to update config.sub.
add upstream config.guess/config.sub
This adds refreshed OS and CPU detection.
https://www.gnu.org/software/gettext/manual/html_node/config_002eguess.html