Upgrader: Fix the order of arguements passed to wp_parse_args() in the Upgrader, introduced with [25272]. See #22704

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WordPress Core Automatic Updates: Add a post-upgrade summary email to the WordPress install's admin email address. See #22704

Built from https://develop.svn.wordpress.org/trunk@25496


git-svn-id: http://core.svn.wordpress.org/trunk@25417 1a063a9b-81f0-0310-95a4-ce76da25c4cd