Support semaphore and rwlock for bthread #1443

Job	Run time
clang-compile-with-cmake	2m 59s
clang-compile-with-bazel	9m 21s
clang-compile-with-boringssl	11m 9s
clang-compile-with-cmake-all-options	4m 58s
clang-compile-with-make	3m 2s
clang-compile-with-make-all-options	5m 25s
gcc-compile-with-bazel	11m 4s
gcc-compile-with-bazel-all-options	12m 22s
gcc-compile-with-boringssl	12m 40s
gcc-compile-with-cmake	3m 13s
gcc-compile-with-cmake-all-options	5m 44s
gcc-compile-with-make	2m 41s
gcc-compile-with-make-all-options	5m 1s
clang-compile-with-bazel-all-options	10m 42s
clang-unittest	15m 46s
	1h 56m 7s

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