Issue #1423552 by barraponto, CoffeyMachine: and variables are now and ; CSS IDs also changed
Issue #1423664 by barraponto: theme_links() now allows more targeted overrides
Issue #1423654 by barraponto: theme_links() has a new parameter 'heading' for accessibility
Issue #1440968 by barraponto: PHPTemplate is now the default theme engine
Issue #1424462 by ndeschildre: The throbber is not working on AJAX calls
Issue #1443012 by greggles: backport core drupal_html_class and drupal_clean_css_identifier
Issue #1387184 by e2thex: Tao hides images from appearing on messages
Issue #1273594 by barraponto: Fixed title_suffix() and title_prefix() are not being printed.
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