Merge pull request #1537 from RosettaCommons/mlnance/add_omega_to_small_mover
Carbohydrates: making SmallMover also move omega for sugars
In addition, this merge fixes a major bug in how the BackboneMovers selected which mainchain torsions to move for sugars.
Shear moves are only meaningful for a tiny subset of sugar cases currently. @mlnance and I will fix the ShearMover in a separate PR.
All tests pass.