Log Message:
Update to 3.20140815. From the changelog:

* Add google back to openid selector. Apparently this has gotten a stay
  of execution until April 2015. (It may continue to work until 2017.)
* highlight: Add compatibility with highlight 3.18, while still supporting
  3.9+. Closes: #757679
  Thanks, David Bremner
* highlight: Add support for multiple language definition directories
  Closes: #757680
  Thanks, David Bremner

pkgsrc changes:

* Add ikiwiki-highlight option that pulls in textproc/p5-highlight,
  for syntax highlighting code blocks (or entire source files).