Hi, I was about to fill a bug about debians org-mode package because it does not come with documentation for the org-mode contrib org-drill. However I believe that this issue should rather be raised to you as the upstream.
I'd like to encourage you to consider any org-mode contrib in your distribution without accompanying documentation a bug. I don't know enough about the info system or your build system so I'll refrain from any suggestion. Thank you, Thomas Koch, http://www.koch.ro
