- node.module:

   + Changed node_form() to use good ol' tables instead of div/CSS-tags.

   + Revised the "revision API": I think we have both an easy and powerful
     API now that should make everyone happy.

   + Improved the usability of the rollback functionality a bit.

   + Removed the "view node" link from the "node overview" page in the
     admin section and added a "delete node" link instead.

   + Added a few missing translations; there might be missing more
     translations though.

- book.module:

   + Made the book module use the "revision API" instead of having it poke
     and use the innards and underlying details of the revision system.

- queue.module:

   + Made the queue module use the improved revision number.

- module.inc:
   + Applied Moshe's patch: added more arguments to module_invoke()

- mail-to-sql.pl:
   + Added support for more header fields and for folded fields

Notes:

- no database updates required