Support Deps / libyuv / 8ed54222e72

Commits

fbarchard@google.com committed 8ed54222e7218 Apr 2012

Attenuation ported to SSE2
BUG=none
TEST=none
Review URL: https://webrtc-codereview.appspot.com/485009

git-svn-id: http://libyuv.googlecode.com/svn/trunk@242 16f28f9a-4ce2-e073-06de-1de4eb20be90