In wp-login.php check if cookies are enabled before attempting to log the user in with wp_signon(), fixes #24961.
Built from https://develop.svn.wordpress.org/trunk@25045


git-svn-id: http://core.svn.wordpress.org/trunk@25032 1a063a9b-81f0-0310-95a4-ce76da25c4cd
WP_HTTP: Cookies: When following redirects, include the request cookies in the redirected requests. Fixes #24987

Built from https://develop.svn.wordpress.org/trunk@25046


git-svn-id: http://core.svn.wordpress.org/trunk@25033 1a063a9b-81f0-0310-95a4-ce76da25c4cd