Enabled _th_ixor_ and _th_equal for bool (#21538)
Summary:
Following up on the feedback in this [PR](https://github.com/pytorch/pytorch/pull/21113/files?file-filters%5B%5D=.cwrap&owned-by%5B%5D=)
Pull Request resolved: https://github.com/pytorch/pytorch/pull/21538
Differential Revision: D15721390
Pulled By: izdeby
fbshipit-source-id: 1b5265bf8726c1051f306f7674d731e25a6c7d03
