Prepare push to trunk. Now working on version 3.21.17.

R=machenbach@chromium.org
BUG=

Review URL: https://codereview.chromium.org/23437040

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@16722 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

ChangeLog

+2013-09-16: Version 3.21.16
+
+        Every place where AllocationMemento is initialized with an
+        AllocationSite is now checked to be sure a valid Site goes in. This is
+        temporary code to diagnose chromium bug 284577.
+
+        Performance and stability improvements on all platforms.
+
+
 2013-09-13: Version 3.21.15
 
         Non-JSObject heap objects are now handled using slow-path IC stub

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     21
-#define BUILD_NUMBER      16
+#define BUILD_NUMBER      17
 #define PATCH_LEVEL       0
 // Use 1 for candidates and 0 otherwise.
 // (Boolean macro values are not supported by all preprocessors.)