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.

- Patch #464714 by chx, DamZ: speed up the tests by bringing unit tests backt to live.  Unit tests bootstrap faster and have the potential to speed up testing. We'll need help converting tests where possible.

#376129 by boombatower, Damien Tournoud, and chx: Change getInfo() to a static method to reduce memory footprint of SimpleTest.

#297972 by scor, yched, Steven Jones, and heyrocker: Allow drupal_execute() to be performed within batch API (with tests).

#402804 by roychri and Damien Tournoud: Add assertions to check if text was found only once or more than once.

#242962 by Heine: Add a 'tablesort' Form API element to unify various places we use a big table with JS-enabled checkboxes next to each item (with tests).