Thomas Guillem authored Oct 07, 2014 and Jean-Baptiste Kempf committed Oct 08, 2014

Add HWDecoderUtil: Utility class that return the preferred hardware decoder
(none, mediacodec and/or iomx) from a list of known devices. It's only taking
effect before Android 4.3 as MediaCodec will always be preferred after.

That class use the hidden android.os.SystemProperties API to retrieve
properties like "ro.board.platform" in order to know which device we are
running. That API won't be used after 4.3 as we want to limit the usage of
android private API.

Signed-off-by: Jean-Baptiste Kempf <jb@videolan.org>