* the_weekday_date() needs the global $currentday
* ms_site_check() needs the global $current_site
* media list table does not need to check for $total_orphans
* upgrader has no $feedback variable, appears to be copypasta from other upgrade APIs
* install_themes_feature_list() has no $features variable, return array() instead of a new return type of WP_Error
see #24210.
git-svn-id: https://develop.svn.wordpress.org/trunk@24189 602fd350-edb4-49c9-b593-d223f7449a82