configuration system.
(also deprecate TARGET=redbee-econotag)
- mc13224v now automatically probes hardware config for buck converter
and 32kHz crystal as well as automatically monitors battery voltage
and manages the buck accordingly.
- new flashed based config system for mc13224v parameters such has
radio modes (demod, autoack), nvmtype, mac address, channel and
power.
- considerably cleaned up econotag platform code (suffered from severe
case of bit-rot)
