Now onto Drupal 6.28-dev
Issue #1869642 by kerasai: Fix placeholder documentation in batch API progress message
Issue #1629994 by oadaeh, Aron Novak, yurtboy: Reference correct RFC in mail functions documentation
Drupal 6.28
Merge branch '6.27-security' into 6.x
Now onto Drupal 6.29-dev
Merge branch '6.x' of http://git.drupal.org/project/drupal into pressflow-plus-6.28.1
Revert "Now onto Drupal 6.29-dev"

This reverts commit 49d0eeaa7268ef57e98aefc7c0346fd7f2f22f5d.
Merge branch 'refs/heads/pressflow-plus-6.28.1'