pytorch

51069186 - Enable MAX_JOBS for using Ninja on Windows

Enable MAX_JOBS for using Ninja on Windows Summary: Pull Request resolved: https://github.com/pytorch/pytorch/pull/17341 Differential Revision: D14164740 Pulled By: soumith fbshipit-source-id: 7a1c3db0a7c590f72a777fcd32e1c740bb0c6257