BUG=265
TEST=cpuid and Polynomial unittest
R=changjun.yang@intel.com

Review URL: https://webrtc-codereview.appspot.com/2217004

git-svn-id: http://libyuv.googlecode.com/svn/trunk@790 16f28f9a-4ce2-e073-06de-1de4eb20be90