Make some blueprint library slots output slots
Merge branch 'blueprintlibraryslots' of https://github.com/tambry/BuildCraft into tambry-blueprintlibraryslots
Merge branch 'tambry-blueprintlibraryslots' into 6.0.x
Merge branch '6.0.x' of github.com:BuildCraft/BuildCraft into 6.0.x