Frameworks: slim up sounds and update (1/2)

Till now we modified always the aosp make files etc. Was complicated to maintain.
Hence we add now an own slim folder and own AllAudioSlim.mk to mainatin it completely
ourselves.

As well reduce size etc etc

Change-Id: I0d60a0abe0935f1000016bc5d69b4f4e36616941
Merge "Frameworks: slim up sounds and update (1/2)" into lp5.0-caf