cosmetics: Add a few explanatory comments
cosmetics: Add a few explanatory comments

Change-Id: Ia6004c08e6f5fd269a1bbd4df51ce9b76345150d

mwgoldsmith/vpx,webmproject/libvpx,ShiftMediaProject/libvpx,Topopiccione/libvpx,Topopiccione/libvpx,mwgoldsmith/libvpx,mwgoldsmith/libvpx,mwgoldsmith/libvpx,mwgoldsmith/vpx,Topopiccione/libvpx,webmproject/libvpx,webmproject/libvpx,mwgoldsmith/libvpx,Topopiccione/libvpx,Topopiccione/libvpx,ShiftMediaProject/libvpx,webmproject/libvpx,mwgoldsmith/libvpx,mwgoldsmith/vpx,mwgoldsmith/libvpx,webmproject/libvpx,ShiftMediaProject/libvpx,mwgoldsmith/vpx,webmproject/libvpx,Topopiccione/libvpx,mwgoldsmith/vpx,ShiftMediaProject/libvpx,ShiftMediaProject/libvpx,mwgoldsmith/vpx