Please import latest config.guess and config.sub

[Hans-Peter Nilsson]

Gentle maintainers, please consider importing the latest
config.guess and config.sub, which would bring in nominal
support for native cris-axis-linux-gnu builds.  A report
mentioned that "automake --add-missing" brings in those files
from an automake distribution, so it seems getting automake
updated is urgent enough to ask you specifically, rather than
just trusting the usual updates.  Thanks.

brgds, H-P