Fix handle unsafety in Deoptimizer::MaterializeNextHeapObject.

R=yangguo@chromium.org

Review URL: https://codereview.chromium.org/22327008

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@16125 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
Move i18n collator code to runtime.

BUG=v8:2745
R=mstarzinger@chromium.org

Review URL: https://codereview.chromium.org/22671002

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@16126 ce2b1a6d-e550-0410-aec6-3dcde31c8c00