diydrones/ardupilot — pull request #864 by geeksville (2014-02-27 00:57:19+00:00)
Title: AC: Further disambiguate the various causes of "Bad GPS Pos"

I've seen a fair number of user questions where they are confused by
"Bad GPS Pos" on their GCS/not being allowed to arm. This change splits
the remaining causes of this fault into separate messages.

Hopefully this increases the odds of the user self diagnosing...