[UNTESTED] First try at Watchdog

This is my first shot at getting watchdog to work. Wish me luck!
Revert "[UNTESTED] First try at Watchdog"

This reverts commit 2bd9e476bcf87ce9033c91cfbfeb867725cdbe23.
Second try at Watchdog
AdditionalArduinoFiles added for Watchdog Support

The second try at Watchdog was successful, however, I needed to modify
some Arduino Files to make it work.

IMPORTANT:
Read the README file located at:
src\ArduinoDUE\AdditionalArduinoFiles\README.txt