XCB is a more "modern" way of communicating with X11 servers than
straight XLib. It is required by some X11 applications. Enabling
support in cairo should not affect applications which don't use it
explicitly.
ClosesHomebrew/homebrew#9598.
Signed-off-by: Jack Nagel <jacknagel@gmail.com>
* 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