Fold drupal_get_updaters() into Updater class, deprecate drupal_get_updaters()

Reroll for 10.1.x.

The last submitted patch, 35: 3036010-35.patch, failed testing. View results →

Pretty sure this can be closed as outdated.

This function was deprecated outright.

The comment in 25 confused me until I realized it was just about deprecating the newly introduced static.

Compared the patches with the current state to confirm the deprecation covered everything in this.

The only thing this does that the main deprecation issue doesn't is deprecating calling drupal_static_reset for the function, but since the function is deprecated that seems fine to me.

Took a look at patches to apply credit as well.

I'm glad MRs are the primary way to review code, even with inter diffs patches are harder without the ui.