Merge branch 'master' of github.com:google/grpc into private_build

BUILD

Makefile

build.json

doc/interop-test-descriptions.md

examples/pubsub/README

examples/pubsub/main.cc

examples/pubsub/pubsub.proto

gRPC.podspec

include/grpc++/channel_interface.h

include/grpc++/impl/internal_stub.h

include/grpc++/impl/rpc_method.h

include/grpc++/impl/rpc_service_method.h

include/grpc/grpc.h

include/grpc/support/atm_win32.h

include/grpc/support/port_platform.h

src/compiler/cpp_generator.cc

src/core/httpcli/httpcli.c

src/core/httpcli/httpcli_security_connector.c

src/core/httpcli/httpcli_security_connector.h

src/core/iomgr/iocp_windows.c