Makefile : modified to compile for ATmega644P
config.h : updated to R2dev CNC board. LEDs added. Unused features
commented.
main.c : LEDR lights on when state=STATE_ALARM (after error or power on,
until axis are resetted to limits), LEDR turns off when state=STATE_IDLE
and system is ready.
protocol.c : LEDs added. Unused features (PINOUT pins) commented.
settings.h : added r2dev in revision number.

Thank you Eclipse.