update config.guess to most recent version

Cactus: update config.guess and config.sub

up to date with git hash 4aa554d72b2aad99506875401f798339c0df7cec of https://savannah.gnu.org/git/?group=config

Cactus: update config.guess and config.sub

up to date with git hash 191bcb948f7191c36eefe634336f5fc5c0c4c2be of https://savannah.gnu.org/git/?group=config