Update notes for submitted changes

* strtok stores its values in thread local storage. So it can not guarantee works well when multithread environment. AudioFlinger has multithread. so strtok_r is more safe.
* ExtendedCodec: Enable timestamp reordering for MPEG4 codec type clips
* Reduce LPA bufsize as to 128KB to save power for SA+
* frameworks/av: Support Tunnel Playback
* audioflinger: Fix delay in enabling effect for LPA
* audioflinger: Fix pops in LPA while effects are applied
* Audio: Irregular timing shown at the last few seconds of the local playback.
* AwesomePlayer will wake up every 10ms while video is playing.
* libstagefright: Optimize h263/mpeg4 assambler to reduce frame dropping in the assambler layer.
* Patches related to Matroska Extractor.