Merge remote-tracking branch 'upstream/master' into cli_main_fork

.gitignore

.gitmodules

BUILD

CMakeLists.txt

INSTALL.md

Makefile

binding.gyp

build.yaml

config.m4

doc/health-checking.md

examples/cpp/README.md

examples/cpp/cpptutorial.md

examples/cpp/helloworld/CMakeLists.txt

examples/cpp/helloworld/Makefile

examples/cpp/route_guide/Makefile

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

examples/csharp/helloworld/Greeter.sln

examples/csharp/helloworld/Greeter/packages.config

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

examples/csharp/route_guide/RouteGuide.sln