Add back some (currently unused) files lost in an earlier NuttX merge
HOTFIX: Fixed HoTT compile error, fixed MAVLink crash
Options for bus and blinkmaddress added.
Option for Bus and BlinkM address added
Merge pull request #194 from NosDE/master

Options for Bus and BlinkM address added
px4io: make uploader more reliable

avoid seeks, lower verify recv size and removed cruft
Merge pull request #196 from PX4/px4io_uploader

px4io: make uploader more reliable
Merge branch 'master' of github.com:PX4/Firmware into sunday