archivers/ruby-ffi-libarchive: update to 1.0.0

Update ruby-ffi-libarchive to 1.0.0.

* Update HOMEPAGE and LICENSE.
* Proper COMMENT.
* No need to use gmake.
* add "USE_LANGUAGES= # none".

1.0.0 (2019-12-28)

* Chefstyle fixes to get the build green again #25 (tas50)
* Add support for custom read functions #27 (jatoben)
* Add Ruby 2.7rc testing and cache gem installs in Buildkite #28 (tas50)

(taca)