fmbtwindows: Enable instantiating Device without connecting
fmbtwindows: Enable instantiating Device without connecting

Device constructor takes new "connect" parameter, similarly to
fmbtandroid.Device. Device.reconnect() accepts new connspec.

01org/fMBT,violep01/fMBT,01org/fMBT,yoonkiss/fMBT,01org/fMBT,01org/fMBT,violep01/fMBT,mixu-/fMBT,01org/fMBT,mixu-/fMBT,mixu-/fMBT,yoonkiss/fMBT,mixu-/fMBT,violep01/fMBT,yoonkiss/fMBT,violep01/fMBT,violep01/fMBT,yoonkiss/fMBT,yoonkiss/fMBT,mixu-/fMBT