pwd seems to resolve my path with no spaces into a canonical path which has spaces, so avoid using it
It's useful to know whether starting the service succeeded.
Merge branch 'master' of https://github.com/trejkaz/jna
Uncomment Winsvc.SERVICE_CONTROL_SHUTDOWN

SERVICE_CONTROL_SHUTDOWN is used from the ntservice contrib module's
own copy of Winsvc, so not having it in core blocks any plans to
decommission that ntservice stuff.