BUG=190
TEST=planar_test
Review URL: https://webrtc-codereview.appspot.com/1112004

git-svn-id: http://libyuv.googlecode.com/svn/trunk@577 16f28f9a-4ce2-e073-06de-1de4eb20be90

ARGBToI400 and ARGBToI411 using AVX2. YUY2ToI420 and UVYVToI420 use AVX2. CopyPlane use rep movsb for AVX2.   CopyPlane2 use rep movsb for AVX2 and CopyPlane if strides match AVX2, which will do a single rep movsb for entire image if stride == width.  MergeUV for I420ToNV12.
BUG=181
TESTED=unittests pass
Review URL: https://webrtc-codereview.appspot.com/1103007

git-svn-id: http://libyuv.googlecode.com/svn/trunk@569 16f28f9a-4ce2-e073-06de-1de4eb20be90

BUG=none
TEST=none
Review URL: https://webrtc-codereview.appspot.com/1105005

git-svn-id: http://libyuv.googlecode.com/svn/trunk@568 16f28f9a-4ce2-e073-06de-1de4eb20be90

BUG=none
TEST=none
Review URL: https://webrtc-codereview.appspot.com/1090007

git-svn-id: http://libyuv.googlecode.com/svn/trunk@565 16f28f9a-4ce2-e073-06de-1de4eb20be90

BUG=none
TEST=lint
Review URL: https://webrtc-codereview.appspot.com/1063010

git-svn-id: http://libyuv.googlecode.com/svn/trunk@553 16f28f9a-4ce2-e073-06de-1de4eb20be90

BUG=none
TEST=none
Review URL: https://webrtc-codereview.appspot.com/990004

git-svn-id: http://libyuv.googlecode.com/svn/trunk@519 16f28f9a-4ce2-e073-06de-1de4eb20be90

Mark stack as not executable.  Although its tempting to generate code and execute it as an optimization, security says this is a bad thing.
BUG=none
TEST=none
Review URL: https://webrtc-codereview.appspot.com/989005

git-svn-id: http://libyuv.googlecode.com/svn/trunk@518 16f28f9a-4ce2-e073-06de-1de4eb20be90

BUG=none
TEST=none
Review URL: https://webrtc-codereview.appspot.com/974012

git-svn-id: http://libyuv.googlecode.com/svn/trunk@513 16f28f9a-4ce2-e073-06de-1de4eb20be90

BUG=133
TEST=still builds
Review URL: https://webrtc-codereview.appspot.com/939020

git-svn-id: http://libyuv.googlecode.com/svn/trunk@491 16f28f9a-4ce2-e073-06de-1de4eb20be90

BUG=none
TEST=none
Review URL: https://webrtc-codereview.appspot.com/937010

git-svn-id: http://libyuv.googlecode.com/svn/trunk@454 16f28f9a-4ce2-e073-06de-1de4eb20be90

BUG=135
TESTED=unitest I420ToNV12
Review URL: https://webrtc-codereview.appspot.com/943006

git-svn-id: http://libyuv.googlecode.com/svn/trunk@447 16f28f9a-4ce2-e073-06de-1de4eb20be90

BUG=126
TEST=convert tests NV12 with alignments
Review URL: https://webrtc-codereview.appspot.com/896007

git-svn-id: http://libyuv.googlecode.com/svn/trunk@426 16f28f9a-4ce2-e073-06de-1de4eb20be90

BUG=none
TEST=none
Review URL: https://webrtc-codereview.appspot.com/887006

git-svn-id: http://libyuv.googlecode.com/svn/trunk@424 16f28f9a-4ce2-e073-06de-1de4eb20be90