Work-around for GNU GLOBAL on 64-bit Ubuntu.

R=svenpanne@chromium.org

Review URL: https://codereview.chromium.org/228263002

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@20564 ce2b1a6d-e550-0410-aec6-3dcde31c8c00