Removed unnecessary include fastio.h
Added enable and disable all interupts for Due
fixed syntax error in microstep_readings()
added Due support to showStartReason() and getFreeRam()
Removed include pgmspace.h (2 instances) because it breaks Due and is included by Arduino.h for AVR.
Ignore some dreck.
Created new directory structure for future incorporation with Repetier. Coding for Arduino Due starts here in development directory src/ArduinoDUE
Allow or Disable all interrupts for Due.
showStartReason() and getFreeRam() for Due.
HAL::tone() and HAL::noTone() for Arduino Due. Uses interrupt from timer to toggle io pin.