add scene change detector for further extension
remove black space at lineend
Merge pull request #535 from volvet/add-scene-change-detector

Add scene change detector
Modify xcode project to fit common reorg.
Merge pull request #543 from zhilwang/reorgcommon-xcode

Modify xcode project to fit common reorg.
        use the same frame type EVideoFrameType in encoder internal
Merge pull request #544 from ruil2/encoder_update

        use the same frame type EVideoFrameType in encoder internal
resolve Conflicts: