com.docker.slirp.exe: fix command-line options
com.docker.slirp.exe: fix command-line options

- use distinct parameter names for each argument (--ethernet --port and --db)
- remove one level of escaping for the default UNC named pipe paths

Signed-off-by: David Scott <bfcdf3e6ca6cef45543bfbb57509c92aec9a39fb@recoil.org>

djs55/vpnkit,djs55/vpnkit,djs55/vpnkit,samoht/vpnkit