Prepare push to trunk. Now working on version 3.18.3.

R=jkummerow@chromium.org

Review URL: https://chromiumcodereview.appspot.com/14403005

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@14367 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

ChangeLog

+2013-04-22: Version 3.18.2
+
+        OS::MemMove/OS::MemCopy: Don't call through to generated code when size
+        == 0 to avoid prefetching invalid memory (Chromium issue 233500)
+
+        Removed heap snapshot size limit. (Chromium issue 232305)
+
+        Performance and stability improvements on all platforms.
+
+
 2013-04-18: Version 3.18.1
 
         Removed SCons related files and deprecated test suite configurations.

src/version.cc

@@ -34,7 +34,7 @@
 // cannot be changed without changing the SCons build script.
 #define MAJOR_VERSION     3
 #define MINOR_VERSION     18
-#define BUILD_NUMBER      2
+#define BUILD_NUMBER      3
 #define PATCH_LEVEL       0
 // Use 1 for candidates and 0 otherwise.
 // (Boolean macro values are not supported by all preprocessors.)