Unit tests verifying the behaviour of the check-news script are added.
This required adding a new make target, "autotools-check" directly called from
"commit-check", because the usual tests are executed in the build directory,
whereas these, being relative to the autotools, cannot be executed there because
the files of the autotools/ directory are not copied do not belong in the build
Signed-off-by: Michele Tartara <email@example.com>
Reviewed-by: Klaus Aehlig <firstname.lastname@example.org>