pytorch

ea65a568 - Use `string(APPEND FOO " bar")` instead of `set(FOO "${FOO} bar") (#42844)

Use `string(APPEND FOO " bar")` instead of `set(FOO "${FOO} bar") (#42844) Summary: Pull Request resolved: https://github.com/pytorch/pytorch/pull/42844 Reviewed By: scintiller Differential Revision: D23067577 Pulled By: malfet fbshipit-source-id: e4380ce02fd6aca37c955a7bc24435222c5d8b19