Modifying the Symmetric rotamer set functions to enable symmetric pose that contain peptoids
Peptoids use a different orient_on_to_residue function to properly align the first side chain atom. This commit updates the symmetry code to call the alternate function when the targe tresidue is a peptoid backbone.
Unit test status: All pass except the two DdgFilter test
Integration test status: All pass except app_exception_handling and buried_unsat_kinemage