Rename caffe2<->c10 operator wrappers (#21322)
Summary:
Pull Request resolved: https://github.com/pytorch/pytorch/pull/21322
Naming is everything.
- Rename c10_operator.h -> export_caffe2_op_to_c10.h
- Rename operator_c10wrapper.h -> export_c10_op_to_caffe2.h
- Rename corresponding macros
This hugely improves readability and explains what these things are doing.
Reviewed By: dzhulgakov
Differential Revision: D15616816
fbshipit-source-id: d976aefcb43a0f55d85c3424fdd9aca7e71c3603
