Changes include:
* parsing of the primary/secondary links has been moved out of phptemplate and into theme_get_setting.
* unnecessary and XHTML-invalidating duplicate div#help removed from themes/bluemarine/page.tpl.php (this is already generated by theme_help)
* weird generation of the "edit primary/secondary links" messages removed from bluemarine and placed in theme.inc
* unnecessary changes to themes/bluemarine/style.css rolled back (the phptemplate bluemarine had an older version of style.css than the one in core)
* chameleon updated to work with new link scheme (passes links through theme_links)
- Converted the Bluemarine theme from XTemplate to PHPTemplate.
- Moved the the Pushbutton theme and the Xtemplate engine to the contributions repository.
Dries Buytaert