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
Merge pull request #8 from Gurtej/master

Code change made