Merge github.com:grpc/grpc into zalloc

.pylintrc

BUILD

CMakeLists.txt

Makefile

WORKSPACE

build.yaml

doc/service_config.md

...e/grpc++/ext/health_check_service_server_builder_option.h

include/grpc++/health_check_service_interface.h

include/grpc++/impl/codegen/call.h

include/grpc++/impl/codegen/sync_stream.h

include/grpc++/server.h

include/grpc/impl/codegen/atm_gcc_atomic.h

src/core/ext/census/grpc_filter.c

src/core/ext/client_channel/client_channel.c

src/core/ext/client_channel/resolver.c

src/core/ext/client_channel/resolver.h

src/core/ext/client_channel/resolver_factory.h

src/core/ext/client_channel/resolver_registry.c

src/core/ext/client_channel/resolver_registry.h