Deprecates the primary_links module.

  This patch was much needed.  Thanks Richards!

  NOTE: if some themers could investigate if there is room for improvement
        with regard to theming, that would be awesome.

  Deprecates the primary_links module.

  This patch was much needed.  Thanks Richards!

  NOTE: if some themers could investigate if there is room for improvement
        with regard to theming, that would be awesome.

  TODO:
  + The contact.module was broken; a new patch for contact.module is needed.
  + Documentation is needed.
  + The most important modules need to be updated ASAP.

  for performance's sake.

- Patch #26637 by Robert Douglas: he documentation to theme_node clearly says the the parameter $teaser is "Whether to display the teaser only, as on the main page." Naming this parameter $main in the themes is confusing.

  TODO: update documentation!

  Usernames can now be themed; eg. an icon/avatar could be added.

  TODO: update contributed modules + update the migration docs.

  Also replaced some double quotes by single quotes.

  TODO: update the "Migrating themes from Drupal 4.6 to Drupal HEAD"-page in
        the Drupal handbook!
  TODO: update the themes in the contributions repository.

- Patch #23452 by berkes: moves the avatar settings to within the check for "user info" on a node tpe.

  TODO: we should write down a couple guidelines for these document them in
        the PHPDoc code of drupal_set_message()!  .