Merge branch 'cleaner-posix2' into cleaner-posix3

BUILD

Makefile

PYTHON-MANIFEST.in

build.yaml

config.m4

doc/health-checking.md

examples/csharp/helloworld/.nuget/packages.config

examples/csharp/helloworld/Greeter/Greeter.csproj

examples/csharp/helloworld/Greeter/Helloworld.cs

examples/csharp/helloworld/Greeter/HelloworldGrpc.cs

examples/csharp/helloworld/Greeter/packages.config

...ples/csharp/helloworld/GreeterClient/GreeterClient.csproj

examples/csharp/helloworld/GreeterClient/packages.config

...ples/csharp/helloworld/GreeterServer/GreeterServer.csproj

examples/csharp/helloworld/GreeterServer/packages.config

examples/csharp/helloworld/README.md

examples/csharp/helloworld/generate_protos.bat

examples/csharp/route_guide/.nuget/packages.config

examples/csharp/route_guide/RouteGuide/RouteGuide.cs

examples/csharp/route_guide/RouteGuide/RouteGuide.csproj