Merge pull request #8238 from nicolasnoble/master-upmerge-from-deep-under

.gitmodules

BUILD

CMakeLists.txt

Makefile

build.yaml

examples/ruby/route_guide/route_guide_client.rb

examples/ruby/route_guide/route_guide_server.rb

grpc.gemspec

src/compiler/python_generator.cc

src/core/lib/iomgr/tcp_windows.c

src/csharp/Grpc.Core/Internal/PlatformApis.cs

src/csharp/Grpc.Core/Internal/UnmanagedLibrary.cs

src/python/grpcio/grpc/__init__.py

src/ruby/lib/grpc/generic/active_call.rb

src/ruby/lib/grpc/generic/rpc_server.rb

src/ruby/pb/test/server.rb

src/ruby/qps/client.rb

src/ruby/qps/qps-common.rb

src/ruby/qps/server.rb

src/ruby/qps/worker.rb