Version 3.16.13

Tagged stubs that rely on instance types as MEGAMORPHIC. (Chromium issue 173974)

Fixed clearing of dead dependent codes and verifing of weak embedded maps on full GC. (Chromium issue 172488,172489)

Made the arm port build cleanly with Clang.

Performance and stability improvements on all platforms.

git-svn-id: https://v8.googlecode.com/svn/trunk@13588 ce2b1a6d-e550-0410-aec6-3dcde31c8c00