Update libvpx snapshot to v0.9.7-p1 (Cayuga).

source/libvpx/vp8/decoder/x86/x86_dsystemdependent.c

 /*
  *  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.
  */
 
 
 #include "vpx_ports/config.h"
 #include "vpx_ports/x86.h"
 #include "vp8/decoder/onyxd_int.h"
 
 
 #if HAVE_MMX
 void vp8_dequantize_b_impl_mmx(short *sq, short *dq, short *q);
 
-static void dequantize_b_mmx(BLOCKD *d)
+void vp8_dequantize_b_mmx(BLOCKD *d)
 {
     short *sq = (short *) d->qcoeff;
     short *dq = (short *) d->dqcoeff;
     short *q = (short *) d->dequant;
     vp8_dequantize_b_impl_mmx(sq, dq, q);
 }
 #endif
 
 void vp8_arch_x86_decode_init(VP8D_COMP *pbi)
 {
+#if CONFIG_RUNTIME_CPU_DETECT
     int flags = x86_simd_caps();
 
     /* Note:
      *
      * This platform can be built without runtime CPU detection as well. If
      * you modify any of the function mappings present in this file, be sure
      * to also update them in static mapings (<arch>/filename_<arch>.h)
      */
-#if CONFIG_RUNTIME_CPU_DETECT
     /* Override default functions with fastest ones for this CPU. */
 #if HAVE_MMX
     if (flags & HAS_MMX)
     {
-        pbi->dequant.block               = dequantize_b_mmx;
+        pbi->dequant.block               = vp8_dequantize_b_mmx;
         pbi->dequant.idct_add            = vp8_dequant_idct_add_mmx;
         pbi->dequant.dc_idct_add         = vp8_dequant_dc_idct_add_mmx;
         pbi->dequant.dc_idct_add_y_block = vp8_dequant_dc_idct_add_y_block_mmx;
         pbi->dequant.idct_add_y_block    = vp8_dequant_idct_add_y_block_mmx;
         pbi->dequant.idct_add_uv_block   = vp8_dequant_idct_add_uv_block_mmx;
     }
 #endif
 #if HAVE_SSE2
     if (flags & HAS_SSE2)
     {
         pbi->dequant.dc_idct_add_y_block = vp8_dequant_dc_idct_add_y_block_sse2;
         pbi->dequant.idct_add_y_block    = vp8_dequant_idct_add_y_block_sse2;
         pbi->dequant.idct_add_uv_block   = vp8_dequant_idct_add_uv_block_sse2;
     }
 #endif
 
 #endif
 }