Added support for mulle platform
Added support for epic platform
Added support for shimmer2 platform
+ Added DHV dissemination protocol in lib/net/dhv
+ Added 6lowpan/IP support in lib/net/blip
Improved CTP forwarder code to save code and RAM
Improved MSP430 sleep code to default to LPM4
Improved TOSSIM PRR curve to prevent very low SNR packets