AJAUDIO-29: Drain audio buffers when closing while playing, drop audio
buffers otherwise.

Change-Id: I6d2eabbb519c92c2f1a4b3eedec93e5e2701d5c6
AJAUDIO-31: The list of available Sinks only displays the bus
id although a friendly name is specified.

Added ability for FriendlyName to pass up into Android application

Change-Id: Ie5a49761ca7111203af79833be83a45e2edce55d
Corrected Android Sink example Activity name.

Change-Id: I9fa3abf10226ce863bae406f308315a400f1912d
Added Javadoc comments to the Android Library sample.