Add access modifiers to `WP_Text_Diff_Renderer_Table` that are compatible with its parent class. Some of the inline docs suggest access that, if implemented, would produce fatal errors.

Add magic methods for BC: __get(), __set(), __isset(), __unset(), and __call().

See #27881, #22234.

Built from https://develop.svn.wordpress.org/trunk@28525


git-svn-id: http://core.svn.wordpress.org/trunk@28351 1a063a9b-81f0-0310-95a4-ce76da25c4cd
In `wpdb`, make some things explicitly `public`. Do not set anything to `private`. This would instantly blow up `hyperdb` in the wild.

See #27881, #22234.

Built from https://develop.svn.wordpress.org/trunk@28526


git-svn-id: http://core.svn.wordpress.org/trunk@28352 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Add `public` access modifier to methods/members of `WP_Widget` and `WP_Widget_Factory`.

See #27881, #22234.

Built from https://develop.svn.wordpress.org/trunk@28527


git-svn-id: http://core.svn.wordpress.org/trunk@28353 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Add access modifiers to `WP_User_Query`.

Add magic methods for BC: __get(), __set(), __isset(), __unset(), and
__call().

See #27881, #22234.

Built from https://develop.svn.wordpress.org/trunk@28528


git-svn-id: http://core.svn.wordpress.org/trunk@28354 1a063a9b-81f0-0310-95a4-ce76da25c4cd