Changes:	add TODO item -> move fuse config to my_mxxx files
		add macro to select COMMUNICATION_PATH -> serial or lcd (__LCD__, __SERIAL__)
		add skeleton for libavrlcd which should be a handle for a display (LCD)

		macros added:
		__LCD__, __SERIAL__ to select COMMUNICATION_PATH
		LCD_* ... see libavrlcd for mor info

		globals
		lcd_errno ... see libavrlcd for info