use vectorsize on clangcl

the ScaleFilterCols_SSSE3 function fails at runtime if vectorsize is not used.

BUG=libyuv:610,libyuv:605
R=wangcheng@google.com

Review URL: https://codereview.chromium.org/2080223007 .

README.chromium

 Name: libyuv
 URL: http://code.google.com/p/libyuv/
-Version: 1598
+Version: 1599
 License: BSD
 License File: LICENSE
 

include/libyuv/row.h

@@ -372,7 +372,7 @@ extern "C" {
 #endif
 #endif
 
-#if defined(_MSC_VER) && !defined(__CLR_VER)
+#if defined(_MSC_VER) && !defined(__CLR_VER) && !defined(__clang__)
 #define SIMD_ALIGNED(var) __declspec(align(16)) var
 #define SIMD_ALIGNED32(var) __declspec(align(64)) var
 typedef __declspec(align(16)) int16 vec16[8];
@@ -387,7 +387,7 @@ typedef __declspec(align(32)) int8 lvec8[32];
 typedef __declspec(align(32)) uint16 ulvec16[16];
 typedef __declspec(align(32)) uint32 ulvec32[8];
 typedef __declspec(align(32)) uint8 ulvec8[32];
-#elif defined(__GNUC__) && !defined(__pnacl__)
+#elif !defined(__pnacl__) && (defined(__GNUC__) || defined(__clang__))
 // Caveat GCC 4.2 to 4.7 have a known issue using vectors with const.
 #define SIMD_ALIGNED(var) var __attribute__((aligned(16)))
 #define SIMD_ALIGNED32(var) var __attribute__((aligned(64)))

include/libyuv/version.h

@@ -11,6 +11,6 @@
 #ifndef INCLUDE_LIBYUV_VERSION_H_  // NOLINT
 #define INCLUDE_LIBYUV_VERSION_H_
 
-#define LIBYUV_VERSION 1598
+#define LIBYUV_VERSION 1599
 
 #endif  // INCLUDE_LIBYUV_VERSION_H_  NOLINT