#321063 by eMPee584, Kars-T: Fixed book/export/html/N with a non-book nid should abort and return 404 not found.

Roll-back of node titles as fields. The Entity Translation module in
contrib can add this back, but for everyone else it creates a *huge* WTF.
Apologies for how late this is coming, but better now than post-alpha. :\

Roll-back of #595084; type-hinting parameters at stdClass makes it so you can't ever pass in another type of class.

- Patch #599804 by effulgentsia, catch: unify page, AJAX 'path', and AJAX 'callback' callbacks. Oh my, this is the beginning of something big.

- Patch #572618 by effulgentsia, pwolanin, sun: all theme functions should take a single argument. Code clean-up and performance improvement. Woot.

before a form builder function, to facilitate common form elements. Clean-up
from form_builder changes from CTools patch. Has nice side-benefit of making
all form functions' signatures consistent.

#544418 by merlinofchaos, sun, drewish, quicksketch, et al: Integrate CTools AJAX framework with Drupal to extend (and replace) existing ahah framework. Everything about AJAX/AHAH is more betterer now.

- 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.

 - book outline form reordering in real-time
 - better context sensitive book parent editing