Collect more data in collect_env (#42887)
Summary:
Collect Python runtime bitness (32 vs 64 bit)
Collect Mac/Linux OS machine time (x86_64, arm, Power, etc)
Collect Clang version
Pull Request resolved: https://github.com/pytorch/pytorch/pull/42887
Reviewed By: seemethere
Differential Revision: D23064788
Pulled By: malfet
fbshipit-source-id: df361bdbb79364dc521b8e1ecbed1b4bd08f9742
