Update to 2009-12-25 "Lemming":

• This release needs PHP5.1.2!
• many Editor improvements o automatic list indention o better headline system o link wizard template authors need to provide CSS
  • compatibility fixes for IE8 and Chrome
  • PHP 5.3 compatibility fixes
  • row span support in tables
  • downloadable code blocks
  • fulltext search improvements
  • added filename search in media manager
  • new dformat function plugin and template authors should replace strftime calls with this function
  • one click revert button for managers template authors need to add this button
  • nicer admin screen template authors need to provide CSS
  • XMLRPC improvements
  • many smaller feature enhancements
  • more plugin events
  • some performance optimizations
  • minor security enhancements
  • many, many, many bug fixes

While I'm there, grab maintainership.