Prepare push to trunk. Now working on version 3.21.0

R=mstarzinger@chromium.org

Review URL: https://codereview.chromium.org/22870007

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@16197 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

ChangeLog

+2013-08-14: Version 3.20.17
+
+        Fixed Math.round/floor that had bogus Smi representation
+        (Chromium issue 272564)
+
+        Performance and stability improvements on all platforms.
+
+
 2013-08-13: Version 3.20.16
 
         Fixed bug in HPhi::SimplifyConstantInput (Chromium issue 269679)

src/version.cc

@@ -33,8 +33,8 @@
 // NOTE these macros are used by some of the tool scripts and the build
 // system so their names cannot be changed without changing the scripts.
 #define MAJOR_VERSION     3
-#define MINOR_VERSION     20
-#define BUILD_NUMBER      17
+#define MINOR_VERSION     21
+#define BUILD_NUMBER      0
 #define PATCH_LEVEL       0
 // Use 1 for candidates and 0 otherwise.
 // (Boolean macro values are not supported by all preprocessors.)