Prepare push to trunk. Now working on version 3.21.14.

ChangeLog

Index: ChangeLog
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+2013-09-11: Version 3.21.13
+
+
+        Add a ResourceConstraint for the embedder to specify that V8 is running
+        on a memory constrained device.
+        (Chromium issue 280984)
+
+        Remove HandleScope default ctor.

[Yang, 2013/09/11 08:15:51]

I don't think this belongs into the Changelog.

[Hannes Payer (out of office), 2013/09/11 08:22:00]

It got a chrome issue number.

+        (Chromium issue 236173)
+
+        Enable escape analysis for Hydrogen.

[Yang, 2013/09/11 08:15:51]

same here.

[Hannes Payer (out of office), 2013/09/11 08:22:00]

I consider that a big feature, which we are turning on.

+
+        Generate a custom OSR entrypoint for OSR compiles on all platforms, and
+        transition to optimized code using the special entrypoint, instead of

[Yang, 2013/09/11 08:15:51]

and here.

[Hannes Payer (out of office), 2013/09/11 08:22:00]

Done.

+        through the deoptimizer. Do not install the OSR compiled code as _the_
+        optimized code for a function. Remove OSR-related stuff from
+        deoptimizer.
+
+        Correctly stringify mixed encoding indirect strings.
+        (Chromium issue 287476)
+
+        Performance and stability improvements on all platforms.
+
+
 2013-09-09: Version 3.21.12
 
         Fixed bitwise negation on x64.