Disables BPF buffering on OS X. 

Appears to solve issue of packet drop/ non-event 
on receive.
Return correct status from address access reply.
Sets missing is_notification_id_valid flag for AA msgs.
Merge branch 'master' of https://github.com/pthedinger/avdecc-lib
Adds missing semi-colon
Merge pull request #2 from ajwlucas/master

Fixes packet peformance/drop issue on OS X