hadley/ggplot2 — pull request #454 by wch (2012-03-26 16:48:25+00:00)
Title: Move and update visual tests for use with vtest

I moved the visual tests from /inst/tests/visual-xxx.r to /visual_test/xxx.r, so that they can be used with the new visual test system.

I also added descriptions for all the tests -- but I'm not 100% sure that the descriptions are accurate. With vtest, it is important that these descriptions not change in the future, so please look them over and let me know if any of them should be changed.