Merge pull request #3570 from vjpai/gcc44_fixes

src/core/iomgr/pollset_multipoller_with_epoll.c

src/core/iomgr/tcp_server_posix.c

src/core/iomgr/udp_server.c

src/core/support/time_posix.c

src/core/transport/chttp2/hpack_table.c

src/core/transport/chttp2/stream_encoder.c

src/core/transport/stream_op.c

src/cpp/client/secure_credentials.cc

src/cpp/server/secure_server_credentials.cc

test/cpp/end2end/streaming_throughput_test.cc