Options for mariadb-waitpid & mysql_waitpid in 10.5 CS

The mariadb-waitpid utility is the newer name for mysql_waitpid, though you can still run it using either name.

Option	Description
--help (-?, -I)	Display this help and exit.
--verbose (-v)	Be more verbose. Give a warning, if kill can't handle signal 0.
--version (-V)	Print version information and exit.