Uninstalling media module triggers errors

not sure of the state of this issue -- there are other issues on disable in any case; they can probably go here as well.

this really should be fixed before releasing the alpha.

When you uninstall the module you get a Fatal error for undefined function - media_registration_kinds() (Line 201 media.install).

Also not sure why do we have following:

 variable_del('media_file_extensions');
  variable_del('media_max_filesize');
  variable_del('media_file_progress_image');
  variable_del('media_file_list_size');
  variable_del('media_file_progress_success');

Are we storing these settings somewhere, on a quick look I dont think we are.

Also upon further testing, if we enable the module again db_add_field doesn't add type column to file table.

i've fixed up the variable deletion.

I think aaron's fix does the trick.