WP_HTTP: Funnel all redirect requests through WP_HTTP::request() via wp_remote_request() to ensure that the proper transport is chosen for redirects. 
This change also moves PHP Streams from redirecting internally, to us handling the redirections in PHP, which brings a more consistent behaviour between transports.
Fixes #23682



git-svn-id: http://core.svn.wordpress.org/trunk@23603 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Fix typos in phpdoc. props bradparbs. fixes #23481.

git-svn-id: http://core.svn.wordpress.org/trunk@23604 1a063a9b-81f0-0310-95a4-ce76da25c4cd
WP_HTTP: Enable developers to request the first x bytes of a document using the 'limit-response-size' parameter.
The connection to the remote server will be disconnected after x number of bytes has been received.
See #23472


git-svn-id: http://core.svn.wordpress.org/trunk@23605 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Add description for wp_dashboard_rss_output(). props aaronholbrook for initial patch. fixes #23301.

git-svn-id: http://core.svn.wordpress.org/trunk@23606 1a063a9b-81f0-0310-95a4-ce76da25c4cd
WP_HTTP: Return error responses from cURL for non-blocking requests. Contrary to popular belief, cURL's non-blocking requests are not exact non-blocking, we still wait for cURL to make the request before returning, so making this change aids in development debugging. Props SergeyBiryukov Fixes #23310


git-svn-id: http://core.svn.wordpress.org/trunk@23607 1a063a9b-81f0-0310-95a4-ce76da25c4cd