removal of stub folder so that tab complete is better
CC1120 driver tweaks.  Bug present: border router turns OFF RX after a short while ?
CC1120 bugfix for BorderRouter dropping out of receive.  Also set channel clear threshold to -90dBM to account for noise in lab.
Merge branch 'driver-tweaks2' into mountain-sensing

Conflicts:
	platform/z1-feshie/platform-conf.h
Merge branch 'mountain-sensing' of https://github.com/feshie/contiki into mountain-sensing
Merge branch 'mountain-sensing' into sanitise