pytorch

ba8dd48d - use cross-platform sed command in cmake_configure_file (#73589)

use cross-platform sed command in cmake_configure_file (#73589) Summary: Pull Request resolved: https://github.com/pytorch/pytorch/pull/73589 Long-form flags do not work and neither does the \w character class. Test Plan: Imported from OSS Reviewed By: malfet Differential Revision: D34558345 Pulled By: dagitses fbshipit-source-id: 73e1b18bdd55d67fd3936428400c3835684549b0 (cherry picked from commit fc85796fadb8dac0043ba0bf43fd54cf817665b7)