Leave it as an option for whether to colorize output during build (#20771)
Summary:
Currently PyTorch forces color output due to #20662. But users should be left an option to turn it off because redirection of the output to a file would be messed if color output is forced.
Pull Request resolved: https://github.com/pytorch/pytorch/pull/20771
Differential Revision: D15495677
Pulled By: ezyang
fbshipit-source-id: 9d89bbed40d0b67368554305394763a54c5ff6f5
