Prior to about 2013, many class methods lacked even access modifiers which made the `@access` notations that much more useful. Now that we've gotten to a point where the codebase is more mature from a maintenance perspective and we can finally remove these notations. Notable exceptions to this change include standalone functions notated as private as well as some classes still considered to represent "private" APIs.
See #41452.
Built from https://develop.svn.wordpress.org/trunk@41161
git-svn-id: http://core.svn.wordpress.org/trunk@41001 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Due to the `clear_update_cache` parameter not being respected, update caches were being cleared incorrectly which prevented multiple plugins to be updated at the same time in background updates - failing with a `fs_unavailable` error message.
Fixes#38024
Built from https://develop.svn.wordpress.org/trunk@39211
git-svn-id: http://core.svn.wordpress.org/trunk@39151 1a063a9b-81f0-0310-95a4-ce76da25c4cd