Includes updated motor tests. These need to be verified.
Nav loiter D was added (.03) - verify this helps.
Nav_lat is now filtered for Rate control. This is to keep jerky pitching to a minimum.
git-svn-id: https://arducopter.googlecode.com/svn/trunk@2448 f9c3cf11-9bcb-44bc-f272-b75c42450872