Issue #1742438 by larowlan, Christian Biggins, kim.pepper, dcam, Everett Zufelt, mgifford: Fixed Vertical tabs header and container rendered even when no vertical tabs.

Issue #171267 by tim.plunkett, chx, NROTC_Webmaster, dcam: Fixed form redirects removes get variables like sort and order.

Issue #635046 by claudiu.cristea, sun, fago: Fixed form_state_values_clean() is polluting form values.

Issue #811542 by David_Rothstein, attiks, thekevinday, effulgentsia, chx: Fixed Regression: Optional radio buttons with an empty, non-NULL default value led to an illegal choice error when none were selected.

Issue #1421410 by andypost, Niklas Fiekas: Fixed  not defined in form_pre_render_conditional_form_element().

Revert "Issue #1475666 by filijonka, Niklas Fiekas, Devin Carlson, Kevin Morse, tstoeckler: Fixed PHP error because of typo in form.inc line 3025."

This reverts commit ea8e74bb.

Issue #1475666 by filijonka, Niklas Fiekas, Devin Carlson, Kevin Morse, tstoeckler: Fixed PHP error because of typo in form.inc line 3025.

Issue #811542 by bojanz, sun, mlncn, chx, pillarsdotnet, loganfsmyth, xjm: Fixed Regression: Required radios throw illegal choice error when none selected.

Issue #866292 by marcingy, ygerasimov, quicksketch, attiks, furamag: Fixed '0' not displayed as checkbox / radios options (nor as any element #title).

#992928 by das-peter, David_Rothstein: Fixed Command line (Drush) install fails on SQLite (#limit_validation_errors doesn't work for programmatic form submissions)

#953914 by chx, yched, effulgentsia, pifantastic: Fixed #limit_validation_errors fails is parents array contains numeric indexes.

- Patch #140783 by sun, chx, effulgentsia, David_Rothstein, webchick: a select list without #default_value() always passes form validation.

- Patch #756762 by effulgentsia, fago, sun: AJAX should follow same rules for whether to call drupal_rebuild_form() as non-AJAX submissions.

- Patch #789186 by effulgentsia: improve drupalPostAJAX() to be used more easily, leading to better AJAX test coverage. (Actual commit so we have proper credit.)

- Patch #789186 by effulgentsia: improve drupalPostAJAX() to be used more easily, leading to better AJAX test coverage. (Rollback)

#734234 by quicksketch, moonray, Melissamcewen, ekes, flobruit: Fixed Radio buttons throw warning in element_children() if keyed with '' (empty string).

- Patch #756762 by effulgentsia, fago, sun, rfay, pwolanin: AJAX should follow same rules for whether to call drupal_rebuild_form() as non-AJAX submissions.

#763376 by fago, sun, noahb, effulgentsia, ksenzee, jhodgdon: Fixed Not validated form values appear in ().

#500866 by boombatower, solotandem: Remove t() from assertion messages in SimpleTest, so translators do not get 1000s of bogus strings.

- Patch #561226 by fago, effulgentsia, sun, YesCT, marcingy: orms (elements) need to able to specify include files to be loaded for building.

#776956 by CrashTest_, Damien Tournoud, effulgentsia, chx: Fixed critical bug: Complex widgets are not respecting '#disabled' state.