[themes] Modules extending themes functionality

Hi, I am working on a theme, which needs a module to extend its functionality ( ajax callbacks, etc... -> http://sotak.co.uk/drupal-admin-theme-vol-1 )

I wonder what would be the best practice, how to give this module to users. Should I create a new project on d.o. in contrb/modules and put the module here and write into themes README file that you need to download and install it? Or should I commit it under theme's directory?

Won't it be nice if drupal could look into themes directory too to check if there are some modules inside the themes so it can stay packed together? :) Maybe new line in .info file which will specify type of contribution? eg. module/theme

marek