A64: Synchronize with r18256.

ChangeLog

Index: ChangeLog
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+2013-12-04: Version 3.23.18
+
+        Performance and stability improvements on all platforms.
+
+
+2013-12-03: Version 3.23.17
+
+        Performance and stability improvements on all platforms.
+
+
+2013-12-02: Version 3.23.16
+
+        Array builtins need to be prevented from changing frozen objects, and
+        changing structure on sealed objects (Chromium issue 299979).
+
+        Performance and stability improvements on all platforms.
+
+
+2013-11-29: Version 3.23.15
+
+        Fix context register allocation in LTransitionElementsKind
+        (Chromium issue 324306).
+
+        Fix bug in inlining Function.apply (Chromium issue 323942).
+
+        Ensure that length is Smi in TypedArrayFromArrayLike constructor
+        (Chromium issue 324028).
+
+        Performance and stability improvements on all platforms.
+
+
 2013-11-28: Version 3.23.14
 
         Shorten autogenerated error message (issue 3019).