Add beginnings of a RNDIS Ethernet Host demo.

Demos/Host/Incomplete/RNDISEthernetHost/ConfigDescriptor.c

Demos/Host/Incomplete/RNDISEthernetHost/ConfigDescriptor.h

Demos/Host/Incomplete/RNDISEthernetHost/Lib/RNDISCommands.c

Demos/Host/Incomplete/RNDISEthernetHost/Lib/RNDISCommands.h

Demos/Host/Incomplete/RNDISEthernetHost/Lib/RNDISConstants.h

Demos/Host/Incomplete/RNDISEthernetHost/RNDISEthernetHost.c

Demos/Host/Incomplete/RNDISEthernetHost/RNDISEthernetHost.h

Demos/Host/Incomplete/RNDISEthernetHost/makefile

LUFA.pnproj

LUFA/Drivers/USB/Class/Device/RNDIS.c

LUFA/Drivers/USB/Class/Host/StillImage.h

LUFA/ManPages/Donating.txt

LUFA/ManPages/Licence.txt

LUFA/ManPages/VIDAndPIDValues.txt