A64: Synchronize with r15204.

ChangeLog

+2013-06-18: Version 3.19.18
+
+        Fixed read-only attribute of Function.length in strict mode.
+        (issue 2705)
+
+        Fixed Runtime_SetProperty to properly handle OOM failures
+        (Chromium issue 249873)
+
+        Emit deprecated check for constant function transitions.
+        (Chromium issue 250609)
+        
+        Made MathFloorOfDiv optimization trigger more often
+        (Issue 2205)
+
+        Make more GCs in idle notification handler.
+        (Chromium issue 241815)
+
+        Increased default type info threshold.
+        (Issue 2730)
+
+        Performance and stability improvements on all platforms.
+
+
+2013-06-14: Version 3.19.16
+
+        Performance and stability improvements on all platforms.
+
+
+2013-06-13: Version 3.19.15
+
+        Performance and stability improvements on all platforms.
+
+
+2013-06-13: Version 3.19.14
+
+        Fixed crashes when calling new Array(a) with a single argument that
+        could result in creating a holey array with a packed elements kind.
+        (Chromium issue 245480)
+
+        Fixed issues in parallel compilation.
+        (Chromium issue 248076)
+
+        Performance and stability improvements on all platforms.
+
+
 2013-06-11: Version 3.19.13
 
         Performance and stability improvements on all platforms.
 
 
 2013-06-10: Version 3.19.12
 
         Fixed arguments array access. (Chromium issue 247303)
 
         Fixed bug in LookupForWrite. (Chromium issue 242332)
@@ skipping 5474 matching lines @@
         setting break points in them.
 
 
 2008-07-03: Version 0.1.0
 
         Initial export.
 
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