Reenable polymorphic getter inlining.

R=titzer@chromium.org

Review URL: https://chromiumcodereview.appspot.com/24134003

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@16835 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
Extend test262 harness to cover intl402 suite as well.

R=jochen@chromium.org, machenbach@chromium.org
BUG=v8:2745
TEST=test262

Review URL: https://codereview.chromium.org/23898010

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@16836 ce2b1a6d-e550-0410-aec6-3dcde31c8c00