3.3 upgrade routine
|Reported by:||nacin||Owned by:||nacin|
We need to remove a few usermeta keys on upgrade: show_admin_bar_admin and plugins_last_view.
While both were stored as global meta, they were fetched with get_user_option(), which means we could consider running a query looking for all table prefixes as well. Though, that's a bit rough on giant usermeta tables, so we could always stick to the basic keys.