Audio for Windows
Merge branch 'master' of github.com:mavlink/qgroundcontrol
override is not available in gcc 4.6 (only 4.7).
Removed for compatability
Merge pull request #409 from gefink/master

override is not aviable in gcc 4.6 (only in 4.7).  Removed for compatability
Added ping reply patch by Paul Chavent
Merge branch 'master' of github.com:mavlink/qgroundcontrol into config