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

CMakeLists.txt

Makefile

etc/roots.pem

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

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

include/grpc/impl/codegen/port_platform.h

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

src/core/lib/iomgr/port.h

src/core/lib/security/transport/security_connector.c

src/core/lib/support/cpu_linux.c

src/core/lib/support/wrap_memcpy.c

src/core/lib/surface/init_secure.c

src/core/tsi/ssl_transport_security.c

src/core/tsi/ssl_transport_security.h

src/csharp/Grpc.Auth/Grpc.Auth.csproj