Merge pull request #408 from STB3/Marlin_with_ATmega1284p_Sanguino_on_023_support

ArduinoAddons/Arduino_0.xx/Sanguino/boards.txt

...ns/Arduino_0.xx/Sanguino/bootloaders/atmega1284p/Makefile

...dons/Arduino_0.xx/Sanguino/bootloaders/atmega1284p/boot.h

.../Arduino_0.xx/Sanguino/bootloaders/atmega1284p/optiboot.c

...ootloaders/atmega1284p/optiboot_1284P_20MHz_57k6_baud.hex

.../Arduino_0.xx/Sanguino/bootloaders/atmega1284p/pin_defs.h

...ns/Arduino_0.xx/Sanguino/bootloaders/atmega1284p/stk500.h

...dons/Arduino_0.xx/Sanguino/cores/arduino/Copy of wiring.h

...ns/Arduino_0.xx/Sanguino/cores/arduino/HardwareSerial.cpp

...oAddons/Arduino_0.xx/Sanguino/cores/arduino/WInterrupts.c

...Addons/Arduino_0.xx/Sanguino/cores/arduino/pins_arduino.c

...Addons/Arduino_0.xx/Sanguino/cores/arduino/pins_arduino.h

ArduinoAddons/Arduino_0.xx/Sanguino/cores/arduino/wiring.h

...dons/Arduino_0.xx/Sanguino/cores/arduino/wiring_private.h