Merge branch 'master' of https://github.com/grpc/grpc into more-bm-diff

BUILD

CMakeLists.txt

Makefile

binding.gyp

build.yaml

config.m4

gRPC-Core.podspec

grpc.gemspec

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

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

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

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

include/grpc++/server_builder.h

package.xml

setup.py

src/boringssl/gen_build_yaml.py

src/core/ext/filters/client_channel/channel_connectivity.c

...core/ext/filters/client_channel/lb_policy/grpclb/grpclb.c

...ilters/client_channel/lb_policy/round_robin/round_robin.c

src/core/ext/filters/http/http_filters_plugin.c