Merge github.com:grpc/grpc into c++lame

BUILD

CMakeLists.txt

Makefile

binding.gyp

build.yaml

config.m4

etc/roots.pem

gRPC-Core.podspec

grpc.gemspec

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

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

include/grpc/impl/codegen/atm_windows.h

include/grpc/impl/codegen/port_platform.h

package.xml

src/core/ext/census/grpc_plugin.c

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

src/core/ext/filters/load_reporting/load_reporting.c

src/core/ext/filters/max_age/max_age_filter.c

src/core/lib/http/httpcli_security_connector.c

src/core/lib/iomgr/ev_epoll_linux.c