added copyright headers

dnn/torch/osce/models/shape_net.py

dnn/torch/osce/models/shape_up_48.py

dnn/torch/testsuite/run_test.py

dnn/torch/testsuite/utils/files.py

dnn/torch/testsuite/utils/pesq.py

dnn/torch/testsuite/utils/pitch.py

dnn/torch/weight-exchange/setup.py

dnn/torch/weight-exchange/wexchange/__init__.py

dnn/torch/weight-exchange/wexchange/c_export/__init__.py

dnn/torch/weight-exchange/wexchange/c_export/c_writer.py

dnn/torch/weight-exchange/wexchange/tf/tf.py

dnn/torch/weight-exchange/wexchange/torch/__init__.py

dnn/torch/weight-exchange/wexchange/torch/torch.py