am e7a53499: am 0a45cda6: am 187b196e: Merge changes Ic51e92e9,Ie808aa82,I74f5f4a1

* commit 'e7a53499125586272adb2c7592db5c4038dabe3b':
  stagefright: add SoftAVCEnc using libavc
  stagefright: add SoftAVCDec using libavc
  stagefright: add SoftMPEG2 decoder using libmpeg2