Rename to hal_uart; move buzzer to app lib
Rename adc and uart to hal_ to avoid name collisons; misc other tidyup
HAL for SAM3X8E (Due) based on Atmel ASF
Update Crossworks projects; add Due project
Update with version for Arduino Due/RAMPS-FD
Update USB bootloader for hal_uart
Cleanup of builds for r2c2 and due