Prepare push to trunk. Now working on version 3.9.20.

R=jkummerow@chromium.org

Review URL: https://chromiumcodereview.appspot.com/9703018

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@11038 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

ChangeLog

+2012-03-14: Version 3.9.19
+
+        Ensure there is a smi check of the receiver for global load and call
+        ICs (Chromium issue 117794).
+
+        Performance and stability improvements on all platforms.
+
+
 2012-03-13: Version 3.9.18
 
         Ensure consistency of Math.sqrt on Intel platforms.

src/version.cc

@@ -34,7 +34,7 @@
 // cannot be changed without changing the SCons build script.
 #define MAJOR_VERSION     3
 #define MINOR_VERSION     9
-#define BUILD_NUMBER      19
+#define BUILD_NUMBER      20
 #define PATCH_LEVEL       0
 // Use 1 for candidates and 0 otherwise.
 // (Boolean macro values are not supported by all preprocessors.)