
* scalar optimization, vectorization (including new file for SSE2 code and path selection mechanism). * 0.5% AEC overall speedup for the straight C path. * 3.0% AEC overall speedup for the SSE2 path. Review URL: http://webrtc-codereview.appspot.com/46005 git-svn-id: http://webrtc.googlecode.com/svn/trunk@134 4adac7df-926f-26a2-2b94-8c16560cd09d