Prepare push to trunk. Now working on version 2.2.9.

Review URL: http://codereview.chromium.org/1914006

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@4587 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

ChangeLog

+2010-05-05: Version 2.2.8
+
+        Performance improvements in the x64 and ARM backends.
+
+
 2010-05-03: Version 2.2.7
 
         Added support for ES5 date time string format to Date.parse.

src/version.cc

@@ -34,7 +34,7 @@
 // cannot be changed without changing the SCons build script.
 #define MAJOR_VERSION     2
 #define MINOR_VERSION     2
-#define BUILD_NUMBER      8
+#define BUILD_NUMBER      9
 #define PATCH_LEVEL       0
 #define CANDIDATE_VERSION true