Remove a duplicate semicolon that snuck in. Props JustinSainton. See #18200

Built from https://develop.svn.wordpress.org/trunk@25822


git-svn-id: http://core.svn.wordpress.org/trunk@25734 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Make WP_Automatic_Upgrader a proper object that gets instantiated. Renames nearly all of its methods.

Also renames wp_auto_updates_maybe_update() to wp_maybe_auto_update().

see #22704.

Built from https://develop.svn.wordpress.org/trunk@25823


git-svn-id: http://core.svn.wordpress.org/trunk@25735 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Bundled Themes: pinking shears, fix a trailing period.

Built from https://develop.svn.wordpress.org/trunk@25824


git-svn-id: http://core.svn.wordpress.org/trunk@25736 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Remove the old wp_auto_updates_maybe_update cron event. Schedule the new wp_maybe_auto_update event at 7 a.m. and 7 p.m. in the site's timezone.

see #27704.

Built from https://develop.svn.wordpress.org/trunk@25825


git-svn-id: http://core.svn.wordpress.org/trunk@25737 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Inline documentation for hooks in wp-admin/customize.php.

Props andg, rzen.
Fixes #25444.

Built from https://develop.svn.wordpress.org/trunk@25826


git-svn-id: http://core.svn.wordpress.org/trunk@25738 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Avoid a notice in is_main_network() when called in single site. see #25030.

Built from https://develop.svn.wordpress.org/trunk@25827


git-svn-id: http://core.svn.wordpress.org/trunk@25739 1a063a9b-81f0-0310-95a4-ce76da25c4cd
For Background updates, ensure that only one update process runs at the same time by using the options table as a lock.
This prevents multiple cron spawns and/or long-running updates from causing multiple update processes to spin up.
This also fixes a case where the upgrader might kick in for ( ! is_main_network() || ! is_main_site() ) in mulisite installs.
See #22704

Built from https://develop.svn.wordpress.org/trunk@25828


git-svn-id: http://core.svn.wordpress.org/trunk@25740 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Inline documentation for hooks in wp-admin/options-discussion.php.

Props siobhyb, ericlewis.
Fixes #25453.

Built from https://develop.svn.wordpress.org/trunk@25829


git-svn-id: http://core.svn.wordpress.org/trunk@25741 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Inline documentation for hooks in wp-admin/options-general.php.

Props siobhyb for the initial patch.
Fixes #25454.

Built from https://develop.svn.wordpress.org/trunk@25830


git-svn-id: http://core.svn.wordpress.org/trunk@25742 1a063a9b-81f0-0310-95a4-ce76da25c4cd