Separate RTLD_GLOBAL from _load_global_deps() (#36682)
Summary:
Pull Request resolved: https://github.com/pytorch/pytorch/pull/36682
For fb internal builds we need to separate whether to use global deps library from loading with RTLD_GLOBAL.
Test Plan: CI -- this should be a no-op for existing builds
Reviewed By: ezyang
Differential Revision: D21051427
fbshipit-source-id: 83bb703d6ceb0265a4c58166749312a44172e78c
