* 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
Install Hadoop to libexec, and then create shim scripts for the binaries
that run from the installed location.
This prevents PREFIX/lib from being spammed with jars.
Adam Vandenberg
Tin Htet Kyaw
Theo