pytorch

95e51bb7 - change BuildExtension.with_options to return a class not a c-tor (#40121)

change BuildExtension.with_options to return a class not a c-tor (#40121) Summary: Pull Request resolved: https://github.com/pytorch/pytorch/pull/40121 Test Plan: Imported from OSS Reviewed By: ezyang Differential Revision: D22076634 Pulled By: pbelevich fbshipit-source-id: a89740baf75208065e418d7f972eeb52db9ee3cf