Support semaphore and rwlock for bthread (#2752) #1464

Job	Run time
clang-compile-with-bazel	9m 29s
clang-compile-with-bazel-all-options	11m 37s
clang-compile-with-cmake	2m 52s
clang-compile-with-boringssl	12m 23s
clang-compile-with-cmake-all-options	4m 49s
clang-compile-with-make	2m 48s
clang-compile-with-make-all-options	5m 3s
clang-unittest	15m 41s
gcc-compile-with-bazel-all-options	11m 32s
gcc-compile-with-bazel	10m 32s
gcc-compile-with-boringssl	13m 18s
gcc-compile-with-cmake	3m 19s
gcc-compile-with-make	2m 45s
gcc-compile-with-cmake-all-options	5m 25s
gcc-compile-with-make-all-options	4m 57s
	1h 56m 30s

Provide feedback