cmake HAVE_TIMERADD examples

mongodb/mongo-bi-connector-odbc-driver configure.cmake :511 

CHECK_SYMBOL_EXISTS (timeradd "sys/time.h" HAVE_TIMERADD)

alibaba/AliSQL configure.cmake :629 

CHECK_SYMBOL_EXISTS (timeradd "sys/time.h" HAVE_TIMERADD)

alibaba/AliSQLBackup configure.cmake :544 

CHECK_SYMBOL_EXISTS (timeradd "sys/time.h" HAVE_TIMERADD)