Detect dill version in torch.save/load (#30985)
Summary:
Fix for issue https://github.com/pytorch/pytorch/issues/28313
Pull Request resolved: https://github.com/pytorch/pytorch/pull/30985
Differential Revision: D19142947
Pulled By: zou3519
fbshipit-source-id: 10e3a182a99e80ca8c9c8328b6f8764b27d78eb3
