settings.h: Include sys/cc.h so CC_INLINE is no longer undefined
Fix avr-atmega128rfa1 port builds to play nicely with #173
Fix er-rest-example to play nicely with #173
Remove useless default values from avr-atmega128rfa1 Makefile
Define CC_INLINE
Make UIP_CONF_BUFFER_SIZE big enough
er-rest-example: Use rdc protocol specified in platform config
I2C bus system (avr) + sensors SHT21, TLS2561, BMP085, BMA180
Include I2C sensors to the Contiki System

one project example: project/sn-sensoransteuerung
tested with avr-atmega128rfa1 platform