[Android] Workaround for OpenSL ES bug

[Martin Storsjö]

On Sat, 1 Feb 2014, Martin Storsjö wrote:

> The attached two patches avoids the OpenSL ES resampling bug (with 48 kHz 
> audio on Nexus 7). The callbacks from vlc modules back to functions in 
> libvlcjni isn't too nice, but required in one way or another in order to do 
> this, since OpenSL ES itself does not provide the native sampling rate.

Thanks Rafaël for looking at it and applying it. For reference, the 
related bug report is http://b.android.com/59453 and two alternative 
patches for fixing it within Android are 
https://android-review.googlesource.com/71022 and 
https://android-review.googlesource.com/80652. (Note the list of pings on 
the former before anything happened.)

// Martin