Set post locked info height to auto so it doesn't overlap action links.

Fixes #24553 for 3.6. Props azaozz.

git-svn-id: http://core.svn.wordpress.org/branches/3.6@24907 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Heartbeat: Reduce the heartbeat from 120 sec to 100 sec when the window doesn't have the focus, to be shorter than the post lock expiration window.

Merges [24908] to the 3.6 branch.

props azaozz.
fixes #24894.



git-svn-id: http://core.svn.wordpress.org/branches/3.6@24909 1a063a9b-81f0-0310-95a4-ce76da25c4cd
New build of MediaElement.js SWF. see #24183. For the 3.6 branch.



git-svn-id: http://core.svn.wordpress.org/branches/3.6@24911 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Copy about.php string to freedoms and credits. Update CSS for 3.6 credits. see #24832.

Merges [24913] to the 3.6 branch.



git-svn-id: http://core.svn.wordpress.org/branches/3.6@24914 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Additional checks when evaluating the safety of an HTTP request, to avoid false negatives.

Merges [24915] to the 3.6 branch.
fixes #24646.



git-svn-id: http://core.svn.wordpress.org/branches/3.6@24916 1a063a9b-81f0-0310-95a4-ce76da25c4cd