diydrones/ardupilot — pull request #1250 by emilecastelnuovo (2014-07-23 09:39:47+00:00)
Title: AP_Compass: VRBRAIN corrected function definition. 

Commit c16672a5295d2772a78a7307d63369361204d4ca broke VRBRAIN compilation.
This fixes it and updates to latest PX4 compass library.

Emile