Modify radio rf2xx wrapper
 - make channel/power 'define'able
 - fix tx functions return values
 - fix rx begin not resumed after receiving a packet
 - add some minor changes in debug
 Update Makefiles
 + change some path from absolute to relative
 + remove target reset in 'debug' target
 + add no-unaligned-access compilation option to avoid unaligned ldm
Modify rime address generation
Make button of agile fox sensible to both edge
Fix openlab uip configuration
add macro to enable the sending of ack in contikimac
update rf2xx wrapper in order to work with contikimac
update the rf2xx wrapper to use directly the openlab periph and not the phy
update openlab-fox rtimer
add slip device for openlab platforms
Renamed openlab contiki-conf.h
Add macro to (de)activate leds usage in rf2xx radio driver
update openlab conf to use contikimac
update openlab-fox platform
add dev/uart1.h for openlab platforms
update openlab fiteco-m3 platform
update openlab fiteco a8 platform
Added ipv6 examples for openlab platforms
Add uip_log implementation to openlab platforms