Added Ethernet send/receive functions for DTB test
Added script to create image for USB update
Merge branch 'master' into netdev

Conflicts:
	software/dtb_expert/dtb_main.cc
	software/dtb_expert/ethernet.cc
	software/dtb_expert/pixel_dtb.cc
	software/dtb_expert/pixel_dtb.h
	software/dtb_expert/rpc_dtb.cc