Pass $post to hooks in edit-form-advanced.php including edit_form_advanced and edit_form_after_*. fixes #24611.



git-svn-id: http://core.svn.wordpress.org/trunk@24446 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Restore code that returns the existing media object if it already exists.

props programmin, adamsilverstein. fixes #24062

git-svn-id: http://core.svn.wordpress.org/trunk@24447 1a063a9b-81f0-0310-95a4-ce76da25c4cd