Move version macros to public V8 header.

src/version.cc

Index: src/version.cc
diff --git a/src/version.cc b/src/version.cc
index 9f7df45f61db028abd6754bdc69081430a2c2152..7bb113f7d186b439cce7df3cb51ea46d9707ed14 100644
--- a/src/version.cc
+++ b/src/version.cc
@@ -29,51 +29,21 @@
 
 #include "version.h"
 
-// These macros define the version number for the current version.
-// NOTE these macros are used by some of the tool scripts and the build
-// system so their names cannot be changed without changing the scripts.
-#define MAJOR_VERSION     3
-#define MINOR_VERSION     21
-#define BUILD_NUMBER      8
-#define PATCH_LEVEL       0
-// Use 1 for candidates and 0 otherwise.
-// (Boolean macro values are not supported by all preprocessors.)
-#define IS_CANDIDATE_VERSION 1
-
 // Define SONAME to have the build system put a specific SONAME into the
 // shared library instead the generic SONAME generated from the V8 version
 // number. This define is mainly used by the build system script.
 #define SONAME            ""
 
-#if IS_CANDIDATE_VERSION
-#define CANDIDATE_STRING " (candidate)"
-#else
-#define CANDIDATE_STRING ""
-#endif
-
-#define SX(x) #x
-#define S(x) SX(x)
-
-#if PATCH_LEVEL > 0
-#define VERSION_STRING                                                         \
-    S(MAJOR_VERSION) "." S(MINOR_VERSION) "." S(BUILD_NUMBER) "."              \
-        S(PATCH_LEVEL) CANDIDATE_STRING
-#else
-#define VERSION_STRING                                                         \
-    S(MAJOR_VERSION) "." S(MINOR_VERSION) "." S(BUILD_NUMBER)                  \
-        CANDIDATE_STRING
-#endif
-
 namespace v8 {
 namespace internal {
 
-int Version::major_ = MAJOR_VERSION;
-int Version::minor_ = MINOR_VERSION;
-int Version::build_ = BUILD_NUMBER;
-int Version::patch_ = PATCH_LEVEL;
-bool Version::candidate_ = (IS_CANDIDATE_VERSION != 0);
+int Version::major_ = V8_MAJOR_VERSION;
+int Version::minor_ = V8_MINOR_VERSION;
+int Version::build_ = V8_BUILD_NUMBER;
+int Version::patch_ = V8_PATCH_LEVEL;
+bool Version::candidate_ = (V8_CANDIDATE_VERSION != 0);
 const char* Version::soname_ = SONAME;
-const char* Version::version_string_ = VERSION_STRING;
+const char* Version::version_string_ = V8_VERSION_STRING;
 
 // Calculate the V8 version string.
 void Version::GetString(Vector<char> str) {