Prepare push to trunk. Now working on version 3.20.12.

R=ulan@chromium.org

Review URL: https://codereview.chromium.org/21103009

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@15954 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

ChangeLog

+2013-07-30: Version 3.20.11
+
+        Performance and stability improvements on all platforms.
+
+
 2013-07-29: Version 3.20.10
 
         Performance and stability improvements on all platforms.

src/version.cc

@@ -34,7 +34,7 @@
 // system so their names cannot be changed without changing the scripts.
 #define MAJOR_VERSION     3
 #define MINOR_VERSION     20
-#define BUILD_NUMBER      11
+#define BUILD_NUMBER      12
 #define PATCH_LEVEL       0
 // Use 1 for candidates and 0 otherwise.
 // (Boolean macro values are not supported by all preprocessors.)