BUG=267
TEST=Luma* builds under gcc 32 and runs similar performance to other builds
R=ryanpetrie@google.com

Review URL: https://webrtc-codereview.appspot.com/3059005

git-svn-id: http://libyuv.googlecode.com/svn/trunk@830 16f28f9a-4ce2-e073-06de-1de4eb20be90