Merge branch 'master' into uv_core_transport

.gitmodules

BUILD

CMakeLists.txt

Makefile

binding.gyp

build.yaml

config.m4

doc/core/pending_api_cleanups.md

doc/server_reflection_tutorial.md

...ples/csharp/helloworld/Greeter/Properties/AssemblyInfo.cs

...sharp/helloworld/GreeterClient/Properties/AssemblyInfo.cs

...sharp/helloworld/GreeterServer/Properties/AssemblyInfo.cs

.../csharp/route_guide/RouteGuide/Properties/AssemblyInfo.cs

...p/route_guide/RouteGuideClient/Properties/AssemblyInfo.cs

...p/route_guide/RouteGuideServer/Properties/AssemblyInfo.cs

examples/php/route_guide/run_route_guide_client.sh

gRPC-Core.podspec

grpc.gemspec

include/grpc++/impl/codegen/call.h

include/grpc++/impl/codegen/method_handler_impl.h