pytorch

da18313d - [caffe2] expose whether FBGEMM is available to the Python code (#54274)

[caffe2] expose whether FBGEMM is available to the Python code (#54274) Summary: Pull Request resolved: https://github.com/pytorch/pytorch/pull/54274 Some of the Python tests need to be aware of whether or not FBGEMM is available, so expose this setting in the pybind extension. ghstack-source-id: 124317732 Test Plan: Will use this variable in the tests on D26658205. Reviewed By: mraway Differential Revision: D27171780 fbshipit-source-id: 4c94144a959bf8bf0e1553b6e029e94a91794e29