cmake HAVE_TIMERCLEAR examples

arkdb/inception configure.cmake :523 

CHECK_SYMBOL_EXISTS (timerclear "sys/time.h" HAVE_TIMERCLEAR)

google/mysql-protobuf configure.cmake :480 

CHECK_SYMBOL_EXISTS (timerclear "sys/time.h" HAVE_TIMERCLEAR)

alibaba/AliSQL configure.cmake :630 

CHECK_SYMBOL_EXISTS (timerclear "sys/time.h" HAVE_TIMERCLEAR)

mongodb/mongo-bi-connector-odbc-driver configure.cmake :512 

CHECK_SYMBOL_EXISTS (timerclear "sys/time.h" HAVE_TIMERCLEAR)