- Patch #598758 by stBorchert, sun, pwolanin, eigentor, TheRec, seutje: add link to the permissions and configuration page of each module from the module configuration page. Great team work!

  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.

    * Removes the hard-coded 'book' type and perform all node actions
      equally on any node type via hook_nodeapi.
    * Achieves 100% integration with the menu system.  Improves
      performance of book rendering.
    * All the algorithms have been changed to use the tree data structure
      returned by the menu system.
    * Added support for 'multiple books'.
    * Some UI improvements.

  This is a momumental patch that took 69 iterations. Although there is
  room for improvement, this is a big step forward.  Thanks for the
  persistence, pwolanin.

- Patch #146910 by dww: only allow enabling modules with the same Drupal core compatibility version.

- Patch #81740 by merlinofchaos, webchick, moshe, neclimdul et al: added package support to the modules page.