Inline documentation for hooks in wp-admin/post.php.

Props nukaga, kpdesign.
Fixes #25846.

Built from https://develop.svn.wordpress.org/trunk@26399


git-svn-id: http://core.svn.wordpress.org/trunk@26299 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Inline documentation for hooks in wp-includes/media-template.php.

Props odysseygate for the initial patch. Props kpdesign.
Fixes #25847.

Built from https://develop.svn.wordpress.org/trunk@26400


git-svn-id: http://core.svn.wordpress.org/trunk@26300 1a063a9b-81f0-0310-95a4-ce76da25c4cd