Prepare push to trunk. Now working on version 3.15.4.

R=jkummerow@chromium.org
BUG=

Review URL: https://chromiumcodereview.appspot.com/11369213

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@12946 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

ChangeLog

+2012-11-13: Version 3.15.3
+
+        Changed sample shell to send non-JS output (e.g. errors) to stderr
+        instead of stdout.
+
+        Correctly check for stack overflow even when interrupt is pending.
+        (issue 214)
+
+        Collect stack trace on stack overflow. (issue 2394)
+
+        Performance and stability improvements on all platforms.
+
+
 2012-11-12: Version 3.15.2
 
         Function::GetScriptOrigin supplies sourceURL when script name is

src/version.cc

@@ -34,7 +34,7 @@
 // cannot be changed without changing the SCons build script.
 #define MAJOR_VERSION     3
 #define MINOR_VERSION     15
-#define BUILD_NUMBER      3
+#define BUILD_NUMBER      4
 #define PATCH_LEVEL       0
 // Use 1 for candidates and 0 otherwise.
 // (Boolean macro values are not supported by all preprocessors.)