Mac OS to work around code generation issue; see the issue details on
http://code.google.com/p/v8/issues/detail?id=404.

Original review: http://codereview.chromium.org/155591


git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@2478 ce2b1a6d-e550-0410-aec6-3dcde31c8c00