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

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

Index: source/libvpx/vp8/encoder/x86/quantize_x86.h
===================================================================
--- source/libvpx/vp8/encoder/x86/quantize_x86.h	(revision 96967)
+++ source/libvpx/vp8/encoder/x86/quantize_x86.h	(working copy)
@@ -19,20 +19,49 @@
  */
 #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 */