Apply (new version of) perltidy on all files

Signed-off-by: Niels Thykier <niels@thykier.net>
Test::Lintian,t: Add helper to make others.t redundant

Signed-off-by: Niels Thykier <niels@thykier.net>
t: Split 02-minimum-version.t into smaller scripts

Signed-off-by: Niels Thykier <niels@thykier.net>