Merged from master

.gitmodules

Makefile

examples/csharp/route_guide/RouteGuide/RouteGuide.cs

examples/csharp/route_guide/RouteGuide/RouteGuideGrpc.cs

examples/csharp/route_guide/RouteGuide/RouteGuideUtil.cs

examples/csharp/route_guide/RouteGuideClient/Program.cs

examples/csharp/route_guide/RouteGuideServer/Program.cs

...les/csharp/route_guide/RouteGuideServer/RouteGuideImpl.cs

grpc.gyp

src/core/iomgr/tcp_windows.c

src/core/security/client_auth_filter.c

src/csharp/Grpc.Core/Logging/ConsoleLogger.cs

src/csharp/Grpc.Core/Logging/ILogger.cs

src/csharp/Grpc.Core/VersionInfo.cs

src/csharp/Grpc.IntegrationTesting/InteropClient.cs

src/csharp/Grpc.IntegrationTesting/proto/test.proto

src/csharp/build_packages.bat

src/node/binding.gyp

src/node/ext/byte_buffer.cc

src/node/ext/byte_buffer.h