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

source/libvpx/vp8/common/entropymode.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.
  */
 
@@ skipping 15 matching lines @@
 
 typedef enum
 {
     SUBMVREF_NORMAL,
     SUBMVREF_LEFT_ZED,
     SUBMVREF_ABOVE_ZED,
     SUBMVREF_LEFT_ABOVE_SAME,
     SUBMVREF_LEFT_ABOVE_ZED
 } sumvfref_t;
 
-int vp8_mv_cont(const MV *l, const MV *a)
+int vp8_mv_cont(const int_mv *l, const int_mv *a)
 {
-    int lez = (l->row == 0 && l->col == 0);
-    int aez = (a->row == 0 && a->col == 0);
-    int lea = (l->row == a->row && l->col == a->col);
+    int lez = (l->as_int == 0);
+    int aez = (a->as_int == 0);
+    int lea = (l->as_int == a->as_int);
 
     if (lea && lez)
         return SUBMVREF_LEFT_ABOVE_ZED;
 
     if (lea)
         return SUBMVREF_LEFT_ABOVE_SAME;
 
     if (aez)
         return SUBMVREF_ABOVE_ZED;
 
@@ skipping 213 matching lines @@
     vp8_tokens_from_tree(vp8_uv_mode_encodings,  vp8_uv_mode_tree);
     vp8_tokens_from_tree(vp8_mbsplit_encodings, vp8_mbsplit_tree);
 
     vp8_tokens_from_tree_offset(vp8_mv_ref_encoding_array,
                                 vp8_mv_ref_tree, NEARESTMV);
     vp8_tokens_from_tree_offset(vp8_sub_mv_ref_encoding_array,
                                 vp8_sub_mv_ref_tree, LEFT4X4);
 
     vp8_tokens_from_tree(vp8_small_mvencodings, vp8_small_mvtree);
 }