fixed #1569 add support for audio format - mp4,m4a
Accelerometer
Merge pull request #792 from ShengxiangChen/issue1569_audioJSB

fixed #1569 add support for audio format - mp4,m4a
Merge pull request #793 from ShengxiangChen/issueXXX_AccelerateForHTML5AndJSB

Accelerometer bug