Update notes for submitted changes

* stagefright: 24-bit audio support via offloading
* audio: compress offload to pcm fallback on SSR
* stagefright: Fix pause logic
* libmedia: ensure mCaptureThread exit within Visualizer destructor
* Do partial reads in MemoryLeakTrackUtil
* AudioTrack: When paused, return cached playback position
* audioflinger: Cleanups
* AC3 support ATS (MPEG2TS) Parser
* AACExtractor: Added support for APE tag
* Fix decoder EOS handling
* AwesomePlayer: improve scheduling of video event to hit PTS
* Support MP2 contents in AVI container.
* Support AAC audio (WaveFormat = 0xFF) in AVI container.
* Support MPEG4 codec in Matroska files
* libstagefright: Polish MPEG4Writer for MediaMuxer.
* RTSP: Return the buffers in source side while the source is disconnected
* Fix Externally reported security issue
* M3UParser: check for NULL before setting meta data
* Fix M3UParser relative path handling.
* stagefright: Support for offloading MPEG2 audio