Log Message:
Update to 3.20140102. From the changelog:

* aggregate: Improve display of post author.
* poll: Fix behavior of poll buttons when inlined.
* Fixed unncessary tight loop hash copy in saveindex where a pointer
  can be used instead. Can speed up refreshes by nearly 50% in some
  circumstances.
* Optimized loadindex by caching the page name in the index.
* Added only_committed_changes config setting, which speeds up wiki
  refresh by querying git to find the files that were changed, rather
  than looking at the work tree. Not enabled by default as it can
  break some setups where not all files get committed to git.
* comments: Write pending moderation comments to the transient underlay
  to avoid conflict with only_committed_changes.
* search: Added google_search option, which makes it search google
  rather than using the internal xapain database.
  (googlesearch plugin is too hard to turn on when xapain databases
  corrupt themselves, which happens all too frequently).
* osm: Remove invalid use of charset on embedded javascript tags.
  Closes: #731197
* style.css: Add compatibility definitions for more block-level
  html5 elements. Closes: #731199
* aggregrate: Fix several bugs in handling of empty and colliding
  titles when generating filenames.