Homebrew/homebrew — pull request #28892 by Calvin-L (2014-05-01 18:39:35+00:00)
Title: Small improvements to liboil formula

- Removed unnecessary GLib dependency
- Added a simple test

Technically pkg-config is not a necessary dependency either (it's only used to find GLib), but it's useful for testing and liboil does install pkg-config files. I'm not sure what accepted practice is in this case.