Prepare push to trunk. Now working on version 2.1.6.

Review URL: http://codereview.chromium.org/1050002

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@4161 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

ChangeLog

+2010-03-17: Version 2.1.5
+
+        Performance improvements for arithmetic operations.
+
+        Performance improvements for string operations.
+
 2010-03-10: Version 2.1.4
 
         Fixed code cache lookup for keyed IC's (issue http://crbug.com/37853).

src/version.cc

@@ -34,7 +34,7 @@
 // cannot be changed without changing the SCons build script.
 #define MAJOR_VERSION     2
 #define MINOR_VERSION     1
-#define BUILD_NUMBER      5
+#define BUILD_NUMBER      6
 #define PATCH_LEVEL       0
 #define CANDIDATE_VERSION true