Install hpp headers for CPP Extensions (pytorch#9182)

Summary:
With the Cppzation of a few files in `TH`/`THC`, the CPP extensions got broken whenever the user uses feature from `THC` in their files, when pytorch is installed via `python setup.py install`.

This addresses issues such as
```
/home/me/.conda/envs/pytorch/lib/python3.6/site-packages/torch/lib/include/THC/THCDeviceTensorUtils.cuh:5:25: fatal error: THCTensor.hpp: No such file or directory
```
Closes pytorch#9182

Reviewed By: soumith

Differential Revision: D8734581

Pulled By: fmassa

fbshipit-source-id: 2a1138f208592eaccb01fcdb805a6b369d7a497a

Author: fmassa

setup.py

@@ -1060,9 +1060,9 @@ def make_relative_rpath(path):
                 'lib/include/ATen/cuda/detail/*.cuh',
                 'lib/include/pybind11/*.h',
                 'lib/include/pybind11/detail/*.h',
-                'lib/include/TH/*.h',
-                'lib/include/TH/generic/*.h',
-                'lib/include/THC/*.h',
+                'lib/include/TH/*.h*',
+                'lib/include/TH/generic/*.h*',
+                'lib/include/THC/*.h*',
                 'lib/include/THC/*.cuh',
                 'lib/include/THC/generic/*.h',
                 'lib/include/THCUNN/*.cuh',