Merge github.com:grpc/grpc into crashy

.gitmodules

BUILD

CMakeLists.txt

Makefile

binding.gyp

build.yaml

config.m4

gRPC-Core.podspec

grpc.gemspec

include/grpc/impl/codegen/port_platform.h

package.xml

src/core/ext/client_config/client_channel.c

src/core/ext/client_config/http_connect_handshaker.c

src/core/ext/client_config/http_connect_handshaker.h

src/core/ext/client_config/lb_policy_factory.h

src/core/ext/client_config/resolver_result.c

src/core/ext/client_config/resolver_result.h

src/core/ext/client_config/subchannel.h

src/core/ext/client_config/subchannel_index.c

src/core/ext/lb_policy/grpclb/grpclb.c