This makes it possible to calculate the future address of a deopt entry before it is possible to generate the deopt table.

Review URL: https://codereview.chromium.org/11275145

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@12877 ce2b1a6d-e550-0410-aec6-3dcde31c8c00