rework debuginfod configury

Rework the top level configure.ac to systematize the
debuginfod-related checks, inferences, rejections,
and configuration outputs.

Tested by hand on a F39 machine, installing/uninstalling
the various dependencies one at a time, and rerunning
the configury with / without --enable-*debuginfod* flags.

Signed-off-by: Frank Ch. Eigler <fche@redhat.com>
2 files changed