Allow Android stream type to be set by SLAndroidConfigurationItf.

Allow Android stream type to be set by SLAndroidConfigurationItf.

Allow Android stream type to be set through the
 SLAndroidConfigurationItf interface, instead of the
 SLAndroidStreamTypeItf interface, which is going away before
 release.
 The stream type is now stored in CAudioPlayer, and used before
 the AudioTrack of the player is instanciated.

AudioRecorder preset and AudioPlayer stream type also implement
 the following behavior: when querying a key with a NULL pointer
 as destination for the value, the value size is updated with
 the actual size used to store the value for the given key.

Change-Id: I652a5b463a220698c53fc1d2b485143b794a1d75