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

source/libvpx/vp8/encoder/x86/quantize_x86.h

 /*
  *  Copyright (c) 2010 The WebM project authors. All Rights Reserved.
  *
  *  Use of this source code is governed by a BSD-style license and patent
  *  grant that can be found in the LICENSE file in the root of the source
  *  tree. All contributing project authors may be found in the AUTHORS
  *  file in the root of the source tree.
  */
 
 #ifndef QUANTIZE_X86_H
 #define QUANTIZE_X86_H
 
 
 /* Note:
  *
  * This platform is commonly built for runtime CPU detection. If you modify
  * any of the function mappings present in this file, be sure to also update
  * them in the function pointer initialization code
  */
 #if HAVE_MMX
 
-#endif
+#endif /* HAVE_MMX */
 
 
 #if HAVE_SSE2
 extern prototype_quantize_block(vp8_regular_quantize_b_sse2);
+extern prototype_quantize_block(vp8_fast_quantize_b_sse2);
 
 #if !CONFIG_RUNTIME_CPU_DETECT
 
 #undef vp8_quantize_quantb
 #define vp8_quantize_quantb vp8_regular_quantize_b_sse2
 
-#endif
+#undef vp8_quantize_fastquantb
+#define vp8_quantize_fastquantb vp8_fast_quantize_b_sse2
 
-#endif
+#endif /* !CONFIG_RUNTIME_CPU_DETECT */
+
+#endif /* HAVE_SSE2 */
 
 
-#endif
+#if HAVE_SSSE3
+extern prototype_quantize_block(vp8_fast_quantize_b_ssse3);
+
+#if !CONFIG_RUNTIME_CPU_DETECT
+
+#undef vp8_quantize_fastquantb
+#define vp8_quantize_fastquantb vp8_fast_quantize_b_ssse3
+
+#endif /* !CONFIG_RUNTIME_CPU_DETECT */
+
+#endif /* HAVE_SSSE3 */
+
+
+#if HAVE_SSE4_1
+extern prototype_quantize_block(vp8_regular_quantize_b_sse4);
+
+#if !CONFIG_RUNTIME_CPU_DETECT
+
+#undef vp8_quantize_quantb
+#define vp8_quantize_quantb vp8_regular_quantize_b_sse4
+
+#endif /* !CONFIG_RUNTIME_CPU_DETECT */
+
+#endif /* HAVE_SSE4_1 */
+
+#endif /* QUANTIZE_X86_H */