Rewrite filtering for benefit of Mac as a single ASM block. Builds both 32 and 64 bit.

BUG=none
TEST=none
Review URL: https://webrtc-codereview.appspot.com/577004

git-svn-id: http://libyuv.googlecode.com/svn/trunk@260 16f28f9a-4ce2-e073-06de-1de4eb20be90

README.chromium

 Name: libyuv
 URL: http://code.google.com/p/libyuv/
-Version: 259
+Version: 260
 License: BSD
 License File: LICENSE
 

include/libyuv/version.h

@@ -11,7 +11,7 @@
 #ifndef INCLUDE_LIBYUV_VERSION_H_
 #define INCLUDE_LIBYUV_VERSION_H_
 
-#define LIBYUV_VERSION 259
+#define LIBYUV_VERSION 260
 
 #endif  // INCLUDE_LIBYUV_VERSION_H_
 

unit_test/cpu_test.cc

@@ -59,7 +59,8 @@ TEST_F(libyuvTest, TestCpuId) {
     cpu_info[1] = cpu_info[3];
     cpu_info[2] = cpu_info[2];
     cpu_info[3] = 0;
-    printf("Cpu Vendor: %s\n", reinterpret_cast<char*>(&cpu_info[0]));
+    printf("Cpu Vendor: %s %x %x %x\n", reinterpret_cast<char*>(&cpu_info[0]),
+           cpu_info[0], cpu_info[1], cpu_info[2]);
     EXPECT_EQ(12, strlen(reinterpret_cast<char*>(&cpu_info[0])));
 
     // CPU Family and Model