* - Added new USE_INTERNAL_SERIAL define for using the unique serial numbers in some AVR models as the USB device's serial number,\r
* added NO_INTERNAL_SERIAL compile time option to turn off new serial number reading code\r
* - Fixed ADC driver for the ATMEGA32U4 and ATMEGA16U4 (thanks to Opendous Inc.)\r
* - Added new USE_INTERNAL_SERIAL define for using the unique serial numbers in some AVR models as the USB device's serial number,\r
* added NO_INTERNAL_SERIAL compile time option to turn off new serial number reading code\r
* - Fixed ADC driver for the ATMEGA32U4 and ATMEGA16U4 (thanks to Opendous Inc.)\r