create redirect_media_location filter in media.php

[Sjeiti]

Similar to the post.php redirect_post_location filter, media.php could use a redirect_media_location filter. This is useful for plugins that want to edit an attachement and redirect back to a specific place.

[johnbillion]

No longer applicable since the attachment editing screen now uses the same action as the post editing screen. You can use the same redirect_post_location hook.