Merge pull request #1383 from RosettaCommons/vmullig/fix_disulfidize_segfault
Trying to fix segfault in Disulfidize when mutating a disulfide positionion to ala.
The code wasn't properly calling core::conformation::break_disulfide(), resulting in a dangling disulfide partner that still thought that it was bonded to the mutated residue. At least, I think this is the problem.