[perl-XML-Twig/f18] (2 commits) ...Keep Tidy optional

[Petr Pisar]

Summary of changes:

  a944c6d... Do not build-require Test::CPAN::Meta::JSON on RHEL >= 7 (*)
  0a5ccd4... Keep Tidy optional (*)

(*) This commit already existed in another branch; no separate mail sent