added IRenderEngine::setUpdateOptions to toggle parallel skinning
add const modifier to Scene::findRenderEngine method
added parallel option removed no longer use of acceleration settings by model
added parallel option to Qt's UI rendering test program
fixed a bug parallel skinning doesn't activate correctly
ensure flush cache value of currentFPS in ScenePlayer
added VertexBundle::allocate (wrapper of glBufferData)
fixed a bug bone wire of the model doesn't be drawn
fixed a bug of incorrect restore of window and state
camera motion should not be able to advance/seek even unless motion
removed redundant code (camera motion is included in m_context->motions)
cleanup setting/creating camera motion code