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
Reduced, but functional u-blox series driver
Disabled old-style gps interface, enabled GPS driver
Tuned GPS update rates
Fixed typo
Minor quick cleanups
More cleanup
Minor polishing, fixed rate and last measurement indication
Merge remote-tracking branch 'upstream/gps' into develop