Refactor the globalload module.•••- Require that a non-empty last parameter is given to the commands.
- Use WriteRemoteNumeric instead of WriteNumeric so opers actually see the response.
- Store <security:allowcoreunload> instead of looking it up every time.
Tidy up keywords on module methods.•••- Remove virtual keyword from a ton of methods which don't need it.
- Add override keyword to a ton of methods which do need it.