YUV and ARGB to RGB formats w/ Any variations to allow destination to be misaligned and any number of bytes
BUG=none
TEST=none
Review URL: https://webrtc-codereview.appspot.com/368009

git-svn-id: http://libyuv.googlecode.com/svn/trunk@160 16f28f9a-4ce2-e073-06de-1de4eb20be90