- Patch #225450 by Crell, chx, bjaspan, catch, swentel, recidive et al: next generation database layer for Drupal 7.

- Patch #270917 by catch, Bojhan, et al: renamed 'primary links' and 'secondary links' to 'main menu' and 'secondary menu' respectively.  Based on usability study conducted with the help of Bojhan.

- Patch #170309 by pwolanin, Pasqualle, Nick Urban, naquah, keith.smith, et al: breadcrumb doesn'tt always include all active items.

  et al.  Can you say 'registry'?  Drupal now maintains an internal registry of
  all functions or classes in the system, allowing it to lazy-load code files as
  needed (reducing the amount of code that must be parsed on each request). The
  list of included files is cached per menu callback for subsequent loading by
  the menu router. This way, a given page request will have all the code it needs
  but little else, minimizing time spent parsing unneeded code.

- Patch #245115 by kkaefer, John Morahan, JohnAlbin et al: after a long discussion we've decided to make the concatenation operator consistent with the other operators.

- Patch #215858 by pwolanin, goba, catch et al: localized menu link data getting saved back to the database.

- Patch #184926 by Rob and brightloudnoise: improved usability of status message when site is offline.

- Patch #211979 by chx, theborg, pwolanin, et al: menu items show no matter where their parent is found.

#215858 by pwolanin: localized menu options were saved into the database, avoid this by using different variable names / array keys

#215127 by chx, webernet, catch; testing by theborg: menu item parenting was broken when moving menu items