#420358 follow-up by Dave Reid: Rename profiles default => standard and expert => minimal, for consistency with labels.

- Patch #502190 by jhodgdon, stella, sun: hook implementation headers out of compliance with standards.

- Patch #626024 by sun, catch: fixed filter_list_format() hits database too often / filter_format_save() doesn't save all filters.

- Patch #613858 by sun, Dave Reid: fixed drupal_is_front_page() should not call drupal_get_normal_path().

- Patch #623992 by catch: performance improvement: reduce {system} database hits on every page request.

#524710 by catch and gordon: Add role_permission() table earlier in order to allow upgrade path to work.

- Patch #589126 by mfb: fixed bug with user module using a flood window of 6 hours, but flood events more than 1 hour old being deleted by cron. Improved API documentation, and added tests.

#356074 by chx and Damien Tournoud: Provide a sequences API. Gets rid of stupid tables that only contain an incrementing ID, and fixes database import problems due to user ID 0.

- Patch #278592 by catch, Dave Reid, andypost, lilou, sun, tobiasb: sync 6.x extra updates with HEAD.

#473268 by David_Rothstein, sun, yoroy, Gábor Hojtsy, cwgordon7, et al.: Allow contextual editing of dang near everything on the page. Also adds a context system to menu local tasks.

- Patch #599804 by effulgentsia, catch: unify page, AJAX 'path', and AJAX 'callback' callbacks. Oh my, this is the beginning of something big.

- Patch #563708 by JohnAlbin, joshmiller: improve theme_get_setting() and make custom theme settings a true form_alter().

#561452 by pwolanin and David_Rothstein: Add API function to get module/theme info without rebuilding it.