Merge branch 'master' of github.com:google/grpc into testing-release

.travis.yml

INSTALL

Makefile

README.md

src/python/README.md

src/python/interop/interop/client.py

src/python/interop/interop/credentials/ca.pem

src/python/interop/interop/methods.py

src/python/interop/interop/resources.py

src/python/interop/interop/server.py

src/python/interop/setup.py

src/python/src/grpc/_adapter/_c_test.py

src/python/src/grpc/_adapter/_channel.c

src/python/src/grpc/_adapter/_client_credentials.c

src/python/src/grpc/_adapter/_face_test_case.py

src/python/src/grpc/_adapter/_links_test.py

src/python/src/grpc/_adapter/_lonely_rear_link_test.py

src/python/src/grpc/_adapter/_low_test.py

src/python/src/grpc/_adapter/rear.py

src/python/src/grpc/early_adopter/_reexport.py