Add new caching functions named `wp_cache_add_multiple`, `wp_cache_set_multiple` and `wp_cache_delete_multiple`. All of these functions allow for an array of data to be passed, so that multiple cache objects can be created / edited / deleted in a single function call. This follows on from [47938] where the `wp_cache_get_multiple` function was introduced and allowed for multiple cache objects to be received in one call.
Props: spacedmonkey, tillkruess, adamsilverstein, flixos90, mitogh, pbearne.
Fixes: #54574.
git-svn-id: https://develop.svn.wordpress.org/trunk@52700 602fd350-edb4-49c9-b593-d223f7449a82
Synchronize documentation between `wp_cache_get_multiple()`, its compat version, and the class method.
See #20875.
git-svn-id: https://develop.svn.wordpress.org/trunk@47944 602fd350-edb4-49c9-b593-d223f7449a82