Include spec into release tarball
Include spec into release tarball

This will also build the spec file as part of `make`, which unbreaks
automatic cockpituous releases.

jkozol/welder-web,weldr/welder-web,jkozol/welder-web,jkozol/welder-web,weldr/welder-web,weldr/welder-web,jkozol/welder-web,weldr/welder-web