cmake HAVE_SEMAPHORE_H examples

alibaba/AliSQL configure.cmake :365 

CHECK_INCLUDE_FILES (semaphore.h HAVE_SEMAPHORE_H)

alibaba/AliSQLBackup configure.cmake :281 

CHECK_INCLUDE_FILES (semaphore.h HAVE_SEMAPHORE_H)

DCMTK/dcmtk CMake/GenerateDCMTKConfigure.cmake :316 

CHECK_INCLUDE_FILE_CXX("semaphore.h" HAVE_SEMAPHORE_H)