pytorch

f70b9ee5 - Advertise USE_PRECOMPILED_HEADERS in CONTRIBUTING.md (#62827)

Advertise USE_PRECOMPILED_HEADERS in CONTRIBUTING.md (#62827) Summary: This option was added in https://github.com/pytorch/pytorch/issues/61940 and fits with this section's theme of improving build times. I've also changed it to a `cmake_dependent_option` instead of `FATAL_ERROR`ing for older CMake versions. Pull Request resolved: https://github.com/pytorch/pytorch/pull/62827 Reviewed By: astaff Differential Revision: D30342102 Pulled By: malfet fbshipit-source-id: 3095b44b7085aee8a884ec95cba9f8998d4442e7