HandleScopeImplementer::entered_contexts_ should not store handles

R=mstarzinger@chromium.org
BUG=

Review URL: https://codereview.chromium.org/23672059

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@16917 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
Android: sync test/intl to device and disable default-locale.js test.

R=jochen@chromium.org

Review URL: https://chromiumcodereview.appspot.com/24031008

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@16918 ce2b1a6d-e550-0410-aec6-3dcde31c8c00