#464862 follow-up by kkaefer: Rename drupal_css_class() to drupal_html_class_X(), for better accuracy.

- Patch #555762 by gordon, sun | yched, chx, moshe weitzman, KiamLaLuno, lilou: improvements to batch API.

- Patch #464862 by JohnAlbin, sun, dereine | dvessel, Jacine, Zarabadoo: added drupal_css_class() to clean class names and rename form_clean_id().

- Patch #576916 by BarisW | Bojhan: default menu 'Parent item' should be Navigation, not Primary links.

- Patch #556438 by rfay, effulgentsia, sun | quicksketch, Rob Loach, Dries, sun.core, Damien Tournoud: Fixed AJAX/AHAH 'callback' support only works for 'submit' and 'button' elements - Should work for all triggering elements.

- Patch #554088 by mr.baileys, sun | eaton: Changed Move user_mail_tokens() and emails to token system.

- Patch#583020 by c960657 | yched, Dries: fixed warning about missing argument 2 for field_delete_instance() in node_configure_fields().

- Patch #578520 by sun, c960657 | mfb, Dries, catch, mattyoung: Changed Make  in url() only accept an array.

- Patch #590014 by sun, mr.baileys | Dries: fixed undefined language when language is specified in .

- Patch #553944 by David_Rothstein, ksenzee | JacobSingh, sun, jhodgdon, pwolanin: allow modules to specify per-page custom themes in hook_menu().

- Patch #591758 by catch: system_region_list() should use list_themes() instead of a direct db_query().

- Patch #563526 by jhodgdon | anschinsan: fixed broken see also link in user-profile.tpl.php doc and re-organized some of the documentation.

- Patch #584370 by JoshuaRogers, JacobSingh | mattyoung: fixed bug with CSS file inclusion in the CSS optimization code.

- Patch #578520 by sun | c960657, mfb, Dries, catch, mattyoung: make  in url() only accept an array. Another nice API clean-up!