Prepare push to trunk. Now working on version 3.9.1.

R=yangguo@chromium.org

Review URL: https://chromiumcodereview.appspot.com/9315027

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@10575 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

ChangeLog

+2012-02-01: Version 3.9.0
+
+        Reduce memory use immediately after starting V8.
+
+        Stability fixes and performance improvements on all platforms.
+
+
 2012-01-26: Version 3.8.9
 
         Flush number string cache on GC (issue 1605).

src/version.cc

@@ -34,7 +34,7 @@
 // cannot be changed without changing the SCons build script.
 #define MAJOR_VERSION     3
 #define MINOR_VERSION     9
-#define BUILD_NUMBER      0
+#define BUILD_NUMBER      1
 #define PATCH_LEVEL       0
 // Use 1 for candidates and 0 otherwise.
 // (Boolean macro values are not supported by all preprocessors.)