This experiment replaces the 4-point Type-II scaled-output vp9 DCT
 transform with the 4-point Type-II orthonormal Daala DCT transform.
Right now the CONFIG_DAALA_DCT4 experiment depends on CONFIG_DCT_ONLY
 as it does not add an orthonormal 4-point DST.

subset-1:

monty-baseline-dctonly-squaretx-subset1 ->
  monty-dct4-dctonly-squaretx-subset1-rerun

  PSNR | PSNR Cb | PSNR Cr | PSNR HVS |   SSIM | MS SSIM | CIEDE 2000
0.0055 | -0.0132 | -0.0405 |   0.0261 | 0.0005 |  0.0246 |     0.0226

objective-1-fast:

monty-baseline-dctonly-squaretx-o1f ->
  monty-dct4-dctonly-squaretx-o1f

   PSNR | PSNR Cb | PSNR Cr | PSNR HVS |    SSIM | MS SSIM | CIEDE 2000
-0.0215 | -0.1573 |     N/A |  -0.0131 | -0.0347 | -0.0390 |    -0.1121

Change-Id: Idef8f6e5525037d5bbb2d0927675c21d1922d69a