Code change made

Disable MMAP on play and record
Use type VIDEO_CHAT as opposed to VOICE (recommended by RIM audio team)
Free up audio_manager handles properly (RIM audio team code review)
Set the play to headset because VIDEO_CHAT defaults to speaker
(recommended RIM audio team)
Removed the conditional compile for the old SDK version as nothing
that’s not built with the current SDK will run on BB10