RFE #141: Add 'contribution' attribute to OtherCredit

My notes on this RFE suggest that we were going to discuss it here,
but I don't recall why. Any comments?

                                        Be seeing you,
                                          norm

-- 
Norman Walsh <>      | We do not know what thoughts
http://www.oasis-open.org/docbook/ | stirred in the mind of the last of
Chair, DocBook Technical Committee | the mastodons, but we can take it
                                   | that they were nothing very
                                   | remarkable. It is hardly likely
                                   | that the last man will have the
                                   | mind of a Goethe. He will die, and
                                   | that will be the last stage of
                                   | human progress.--Anatole France