[Plugin: Magic Fields 2] Support for other plugin panels in 'suppots' section

Hi the problem is that wordpress does not have a function to all types of supports available.

WordPress store the support in a global var ( $_wp_post_type_features ) something like this

array(
  [post] => Array
        (
            [title] => 1
            [editor] => 1
            [author] => 1
            [thumbnail] => 1
            [excerpt] => 1
            [trackbacks] => 1
            [custom-fields] => 1
            [comments] => 1
            [revisions] => 1
            [post-formats] => 1
        )

    [page] => Array
        (
            [title] => 1
            [editor] => 1
            [author] => 1
            [thumbnail] => 1
            [page-attributes] => 1
            [custom-fields] => 1
            [comments] => 1
            [revisions] => 1
        )
);

You can add support for add_meta_box function