Merge branch 'master' into release

Merge branch 'master' into release
  * bumped interface version to 6
  * fixed packet output (reporting the OSD name correctly now)
  * refactored packet structs: split up in cec commands and adapter messages
  * fixed i/o timings
  * added Darwin support (thanks Davilla!)
  * fixed WaitForAck()
  * fixed possible deadlock when starting a new thread
  * implemented vendor id and device class parsing. full detection will follow
  * added "on" and "standby" commands to the test client
  * retransmit packets if needed
  * fix GetTimeMs() on linux
  * added timestamp to log messages