Use incrementors for cache invalidation in get_terms().

fixes #23326
see #23173


git-svn-id: http://core.svn.wordpress.org/trunk@23384 1a063a9b-81f0-0310-95a4-ce76da25c4cd
In wp_get_archives(), cache queries to individual cache buckets instead of storing them in one cached array. Use incrementor style passive cache invalidation.

fixes #23206
see #23173


git-svn-id: http://core.svn.wordpress.org/trunk@23385 1a063a9b-81f0-0310-95a4-ce76da25c4cd