brooklyncentral/brooklyn — pull request #686 by andreaturli (2013-04-19 13:58:16+00:00)
Title: cherrypicked a01940fac58d397b384b709631921810d95606cd 

* cherrypicked 'Merge pull request #639 from ahgittin/fix/addChild-with-spec-on-interface onto 0.5'