Allow exposing caffe2 operators with variable number of input tensors to c10 (#17491)
Summary:
Pull Request resolved: https://github.com/pytorch/pytorch/pull/17491
Before, there was no way to expose a caffe2 operator that had a variable number of inputs.
Now, this is allowed by giving the operator one tensor list input.
Note that the tensor list must be the first input, and that any other tensor inputs will be ignored and inaccessible in this case.
Reviewed By: ezyang
Differential Revision: D14220705
fbshipit-source-id: 7f921bfb581caf46b229888c409bbcc40f7dda80
