* `WP_List_Table` is the base class that implements `__get()` and `__call()` for BC
* Adds unit tests to confirm that subclasses properly inherit magic methods
* Add modifiers to subclasses: `WP_Links_List_Table`, `WP_Media_List_Table`, `WP_MS_Sites_List_Table`, `WP_MS_Themes_List_Table`, `WP_MS_Users_List_Table`, `WP_Plugin_Install_List_Table`, `WP_Plugins_List_Table`, `WP_Posts_List_Table`, `WP_Terms_List_Table`, `WP_Theme_Install_List_Table`, `WP_Themes_List_Table`
See #27881, #22234.
git-svn-id: https://develop.svn.wordpress.org/trunk@28493 602fd350-edb4-49c9-b593-d223f7449a82
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