* `default-widgets.php` now requires all of the individual classes
* Move the functions scattered about this file to `widget-functions.php`, which loads before `default-widgets.php`, which only conditionally loads anyway in `wp_maybe_load_widgets()`, which is hooked on `plugins_loaded`
See #33413, #23012.
git-svn-id: https://develop.svn.wordpress.org/trunk@33843 602fd350-edb4-49c9-b593-d223f7449a82