Updates batlog so printing of batlog is only offered when on USB power, and fixes issue with direct use of Xadow.getBatVol() instead of mcu_get_battery_voltage()
Updates batlog so printing of batlog is only offered when on USB power, and
fixes issue with direct use of Xadow.getBatVol() instead of
mcu_get_battery_voltage()

freespace/xadow-watch,freespace/xadow-watch