Inconsistent MS API: delete_site_option action hook is only called AFTER deletion, unlike delete_option

[danielnashnz]

Unlike the delete_option action hook, the delete_site_option action hook is only called AFTER deletion of the row from the sitemeta table - making it difficult to capture the expiring value (for instance), unless you know its precise option key name ( and hook it using pre_delete_site_option_{$option} ).

Suggest introducing a pre-deletion, non-specific action hook call named "pre_delete_option" for options and "pre_delete_site_option" for site options, for consistency.

What a mess. 20651.diff​:

• add 'pre_delete_site_option' and call it only if the option exists
• add 'pre_delete_option_{$option}'

Similar efforts: [13148]

To keep it consistent with delete_option and delete_site_option, shouldn't $option be passed as well in the do_action calls?

Obviously, 'pre_delete_site_option' is useless if we don't pass the $option. Sergey already submitted a fixed patch.