Update Underscore to version 1.4.4. see #23262

git-svn-id: http://core.svn.wordpress.org/trunk@23383 1a063a9b-81f0-0310-95a4-ce76da25c4cd
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
Compress scripts/styles: 3.6-alpha-23386.

git-svn-id: http://core.svn.wordpress.org/trunk@23386 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Correct the documentation for _publish_post_hook(). Remove unused global declaration. props roulandf. fixes #23376.

git-svn-id: http://core.svn.wordpress.org/trunk@23387 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Use a human-readable constant in wp_set_auth_cookie(). fixes #23372.

git-svn-id: http://core.svn.wordpress.org/trunk@23388 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Heartbeat API: fix error in IE < 9, props SergeyBiryukov, don't attempt to bind events to cross-domain iframes, see #23216

git-svn-id: http://core.svn.wordpress.org/trunk@23389 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Merge remote-tracking branch 'upstream/master'