added wait cursor for "interface" menu selection because LibUsb enumeration of FX2 and FX3 devices in Windows is very long time.
added wait cursor for "interface" menu selection because LibUsb enumeration of FX2 and FX3 devices in Windows is very long time.

git-svn-id: 326886b0e71892ae347f522bf35df5eb8414ab8b@4930 b7f4320f-462c-0410-a916-d9f35bb82d52

viktorbahr/jaer,viktorbahr/jaer,viktorbahr/jaer,SensorsINI/jaer,SensorsINI/jaer,SensorsINI/jaer,SensorsINI/jaer,viktorbahr/jaer,viktorbahr/jaer,viktorbahr/jaer,SensorsINI/jaer,SensorsINI/jaer,viktorbahr/jaer,SensorsINI/jaer,SensorsINI/jaer