This is libmagic, nobody wants the file command. If they do, they can make a new formula. Though in that case it would be a dupe and we wouldn't want it.
FixesHomebrew/homebrew#7280.
* Use new "url" features
* Use keg_only DSL
* Use "skip_clean :all" DSL
* Whitespace and style cleanups
* Make bash invocations less silly
* Use new man2-man8 helpers
* Remove "FileUtils." since it is included in Formula
* Use real names for deps instead of aliases
* ENV.x11 now updates path, so remove that from individual brews
