BUG=none
TESTED=out\release_x64\libyuv_unittest --gtest_filter=libyuvTest.TestCompilerHasAVX2
R=tpsiaki@google.com

Review URL: https://webrtc-codereview.appspot.com/24439004

git-svn-id: http://libyuv.googlecode.com/svn/trunk@1074 16f28f9a-4ce2-e073-06de-1de4eb20be90