daemon-windows: Rename service variables.
Sa far, we are using variable 'detach' to indicate whether the option
"--service" has been set. We were using variable 'detached' to indicate that
the daemon is being called from the Windows services manager.
An upcoming commit introduces command line option "--detach" for daemons
running on Windows. This will cause confusion with variable names.
Therefore, rename the variables.
Signed-off-by: Gurucharan Shetty <gshetty@nicira.com>
Acked-by: Ben Pfaff <blp@nicira.com>