Merge pull request #157 from dklempner/eventfd

Makefile

build.json

include/grpc/support/port_platform.h

src/core/iomgr/pollset_kick.c

src/core/iomgr/pollset_kick.h

src/core/iomgr/pollset_kick_posix.h

src/core/iomgr/pollset_kick_windows.h

src/core/iomgr/wakeup_fd_eventfd.c

src/core/iomgr/wakeup_fd_nospecial.c

src/core/iomgr/wakeup_fd_pipe.c

src/core/iomgr/wakeup_fd_pipe.h

src/core/iomgr/wakeup_fd_posix.c

src/core/iomgr/wakeup_fd_posix.h

test/core/iomgr/poll_kick_posix_test.c

tools/run_tests/tests.json

vsprojects/vs2013/grpc.vcxproj

vsprojects/vs2013/grpc.vcxproj.filters

vsprojects/vs2013/grpc_unsecure.vcxproj

vsprojects/vs2013/grpc_unsecure.vcxproj.filters