* 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
Botan is a BSD-licensed crypto library written in C++. It provides
applications with the ability to use a number of cryptographic
algorithms, as well as X.509 certificates and CRLs, PKCS Homebrew/homebrew#10
certificate requests, a filter/pipe message processing system, and
a wide variety of other features, all written in portable C++.