Prepare push to trunk. Now working on version 3.19.4.

R=jkummerow@chromium.org

Review URL: https://chromiumcodereview.appspot.com/15746005

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@14748 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

ChangeLog

+2013-05-22: Version 3.19.3
+
+        Performance and stability improvements on all platforms.
+
+
 2013-05-17: Version 3.19.2
 
         Fill in one-word-fillers for the unused property fields

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     19
-#define BUILD_NUMBER      3
+#define BUILD_NUMBER      4
 #define PATCH_LEVEL       0
 // Use 1 for candidates and 0 otherwise.
 // (Boolean macro values are not supported by all preprocessors.)