rename yuv matrix constants to be more clear about what they are

include/libyuv/row.h

 /*
  *  Copyright 2011 The LibYuv 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 429 matching lines @@
 #define KUVTOB   0
 #define KUVTOG   32
 #define KUVTOR   64
 #define KUVBIASB 96
 #define KUVBIASG 128
 #define KUVBIASR 160
 #define KYTORGB  192
 #endif
 
 // Conversion matrix for YUV to RGB
-extern const struct YuvConstants kYuvIConstants;  // BT.601
-extern const struct YuvConstants kYuvJConstants;  // JPeg color space
-extern const struct YuvConstants kYuvHConstants;  // BT.709
+extern const struct YuvConstants kYuvI601Constants;  // BT.601
+extern const struct YuvConstants kYuvJPEGConstants;  // JPeg color space
+extern const struct YuvConstants kYuvH709Constants;  // BT.709
 
-// Conversion matrix for YVU to BGR.
-extern const struct YuvConstants kYvuIConstants;  // BT.601
-extern const struct YuvConstants kYvuJConstants;  // JPeg color space
-extern const struct YuvConstants kYvuHConstants;  // BT.709
+// Conversion matrix for YVU to BGR
+extern const struct YuvConstants kYvuI601Constants;  // BT.601
+extern const struct YuvConstants kYvuJPEGConstants;  // JPeg color space
+extern const struct YuvConstants kYvuH709Constants;  // BT.709
 
 #if defined(__APPLE__) || defined(__x86_64__) || defined(__llvm__)
 #define OMITFP
 #else
 #define OMITFP __attribute__((optimize("omit-frame-pointer")))
 #endif
 
 // NaCL macros for GCC x86 and x64.
 #if defined(__native_client__)
 #define LABELALIGN ".p2align 5\n"
@@ skipping 1430 matching lines @@
 void ARGBLumaColorTableRow_SSSE3(const uint8* src_argb, uint8* dst_argb,
                                  int width,
                                  const uint8* luma, uint32 lumacoeff);
 
 #ifdef __cplusplus
 }  // extern "C"
 }  // namespace libyuv
 #endif
 
 #endif  // INCLUDE_LIBYUV_ROW_H_  NOLINT