libvpx: Pull from upstream

source/libvpx/vpx_dsp/x86/sad_sse2.asm

 ;
 ;  Copyright (c) 2010 The WebM project authors. All Rights Reserved.
 ;
 ;  Use of this source code is governed by a BSD-style license
 ;  that can be found in the LICENSE file in the root of the source
 ;  tree. An additional intellectual property rights grant can be found
 ;  in the file PATENTS.  All contributing project authors may
 ;  be found in the AUTHORS file in the root of the source tree.
 ;
 
-%define program_name vpx
-
 %include "third_party/x86inc/x86inc.asm"
 
 SECTION .text
 
 %macro SAD_FN 4
 %if %4 == 0
 %if %3 == 5
 cglobal sad%1x%2, 4, %3, 5, src, src_stride, ref, ref_stride, n_rows
 %else ; %3 == 7
 cglobal sad%1x%2, 4, %3, 5, src, src_stride, ref, ref_stride, \
@@ skipping 237 matching lines @@
 
   movd                 eax, m0
   RET
 %endmacro
 
 INIT_MMX sse
 SAD4XN  8 ; sad4x8_sse
 SAD4XN  4 ; sad4x4_sse
 SAD4XN  8, 1 ; sad4x8_avg_sse
 SAD4XN  4, 1 ; sad4x4_avg_sse