mxcl/homebrew — pull request #15019 by adammw (2012-09-20 12:48:49+00:00)
Title: libgtop fails to build without depends_on :x11

`brew install libgtop` fails without this patch due to linking errors with `-lXau` ( http://pastebin.com/gnqfcKAj )
Adding x11 dependency allows it to build successfully.