Unable to assign Action_email_role to workflow transitions

Issue Summary

Hi there,
I may be misunderstanding something here, but I'm unable to see the action I created when looking at the Workflow triggers. Based on http://drupal.org/node/172152 it looks like action_email_role_action_info() should have an extra hook definition line, something like:

'workflow' => array('any'),

so that these actions are declared assignable to workflow based triggers. I'm aware of http://drupal.org/project/triggerunlock allowing free assignment but this seems more appropriate.